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Elementary Algebra

Lynn Marecek

Chapter 4

Graphs - all with Video Answers

Educators


Section 1

Use the Rectangular Coordinate System

01:57

Problem 1

In the following exercises, plot each point in a rectangular coordinate system and identify the quadrant in which the point is located.
(a) (-4,2)
(b) (-1,-2)
(c) (3,-5)
(d) (-3,5)
(e) $\left(\frac{5}{3}, 2\right)$

Karla Conrey
Karla Conrey
Numerade Educator
02:34

Problem 2

In the following exercises, plot each point in a rectangular coordinate system and identify the quadrant in which the point is located.
(@) (-2,-3)
(b) (3,-3)
(c) (-4,1)
(d) (4,-1)
(e) $\left(\frac{3}{2}, 1\right)$

Karla Conrey
Karla Conrey
Numerade Educator
02:22

Problem 3

In the following exercises, plot each point in a rectangular coordinate system and identify the quadrant in which the point is located.
(a) (3,-1)
(b) (-3,1)
(c) (-2,2)
(d) (-4,-3)
(e) $\left(1, \frac{14}{5}\right)$

Karla Conrey
Karla Conrey
Numerade Educator
01:49

Problem 4

In the following exercises, plot each point in a rectangular coordinate system and identify the quadrant in which the point is located.
(a) (-1,1)
(b) (-2,-1)
(c) (2,1)
(d) (1,-4)
(e) $\left(3, \frac{7}{2}\right)$

Karla Conrey
Karla Conrey
Numerade Educator
01:12

Problem 5

In the following exercises, plot each point in a rectangular coordinate system.
(@) (-2,0)
(b) (-3,0)
(c) (0,0)
(d) (0,4)
(e) (0,2)

Karla Conrey
Karla Conrey
Numerade Educator
00:52

Problem 6

In the following exercises, plot each point in a rectangular coordinate system.
(@) (0,1)
(b) (0,-4)
(c) (-1,0)
(?) (0,0)
(e) (5,0)

Karla Conrey
Karla Conrey
Numerade Educator
00:59

Problem 7

In the following exercises, plot each point in a rectangular coordinate system.
(a) (0,0)
(b) (0,-3)
(@) (-4,0)
@) (1,0)
(e) (0,-2)

Karla Conrey
Karla Conrey
Numerade Educator
00:48

Problem 8

In the following exercises, plot each point in a rectangular coordinate system.
(a) (-3,0)
(b) (0,5)
(c) (0,-2)
(?) (2,0)
(e) (0,0)

Karla Conrey
Karla Conrey
Numerade Educator
00:40

Problem 9

In the following exercises, name the ordered pair of each point shown in the rectangular coordinate system.

Ashton Collins
Ashton Collins
Numerade Educator
00:40

Problem 10

In the following exercises, name the ordered pair of each point shown in the rectangular coordinate system.

Ashton Collins
Ashton Collins
Numerade Educator
00:40

Problem 11

In the following exercises, name the ordered pair of each point shown in the rectangular coordinate system.

Ashton Collins
Ashton Collins
Numerade Educator
00:40

Problem 12

In the following exercises, name the ordered pair of each point shown in the rectangular coordinate system.

Ashton Collins
Ashton Collins
Numerade Educator
01:29

Problem 13

In the following exercises, which ordered pairs are solutions to the given equations?
$2 x+y=6$
(a) (1,4)
(b) (3,0)
(c) (2,3)

Karla Conrey
Karla Conrey
Numerade Educator
01:29

Problem 14

In the following exercises, which ordered pairs are solutions to the given equations?
$x+3 y=9$
(a) (0,3)
(@) (6,1)
(c) (-3,-3)

Karla Conrey
Karla Conrey
Numerade Educator
01:15

Problem 15

In the following exercises, which ordered pairs are solutions to the given equations?
$4 x-2 y=8$
(@) (3,2)
(@) (1,4)
(c) (0,-4)

Karla Conrey
Karla Conrey
Numerade Educator
01:09

Problem 16

In the following exercises, which ordered pairs are solutions to the given equations?
$3 x-2 y=12$
(@) (4,0)
(b) (2,-3)
(c) (1,6)

Karla Conrey
Karla Conrey
Numerade Educator
01:41

Problem 17

In the following exercises, which ordered pairs are solutions to the given equations?
$y=4 x+3$
(a) (4,3)
(b) (-1,-1)
(c) $\left(\frac{1}{2}, 5\right)$

Karla Conrey
Karla Conrey
Numerade Educator
View

Problem 18

In the following exercises, which ordered pairs are solutions to the given equations?
$y=2 x-5$
(a) (0,-5)
(b) (2,1)
(c) $\left(\frac{1}{2},-4\right)$

Karla Conrey
Karla Conrey
Numerade Educator
01:49

Problem 19

In the following exercises, which ordered pairs are solutions to the given equations?
$y=\frac{1}{2} x-1$
(@) (2,0)
(b) (-6,-4)
(c) (-4,-1)

Karla Conrey
Karla Conrey
Numerade Educator
01:53

Problem 20

In the following exercises, which ordered pairs are solutions to the given equations?
$y=\frac{1}{3} x+1$
(a) (-3,0)
(@) (9,4)
(c) (-6,-1)

Karla Conrey
Karla Conrey
Numerade Educator
01:18

Problem 21

In the following exercises, complete the table to find solutions to each linear equation.
$$
y=2 x-4
$$

Karla Conrey
Karla Conrey
Numerade Educator
00:55

Problem 22

In the following exercises, complete the table to find solutions to each linear equation.
$$
y=3 x-1
$$

Breanna Ollech
Breanna Ollech
Numerade Educator
00:55

Problem 23

In the following exercises, complete the table to find solutions to each linear equation.
$$
y=3 x-1
$$

Breanna Ollech
Breanna Ollech
Numerade Educator
01:10

Problem 24

In the following exercises, complete the table to find solutions to each linear equation.
$$
y=-x+2
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:34

Problem 25

In the following exercises, complete the table to find solutions to each linear equation.
$$
y=\frac{1}{3} x+1
$$

Ashton Collins
Ashton Collins
Numerade Educator
01:15

Problem 26

In the following exercises, complete the table to find solutions to each linear equation.
$$
y=\frac{1}{2} x+4
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:48

Problem 27

In the following exercises, complete the table to find solutions to each linear equation.
$$
y=-\frac{3}{2} x-2
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:34

Problem 28

In the following exercises, complete the table to find solutions to each linear equation.
$$
y=-\frac{2}{3} x-1
$$

Ashton Collins
Ashton Collins
Numerade Educator
02:12

Problem 29

In the following exercises, complete the table to find solutions to each linear equation.
$$
x+3 y=6
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:48

Problem 30

In the following exercises, complete the table to find solutions to each linear equation.
$$
x+2 y=8
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:12

Problem 31

In the following exercises, complete the table to find solutions to each linear equation.
$$
2 x-5 y=10
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:06

Problem 32

In the following exercises, complete the table to find solutions to each linear equation.
$$
3 x-4 y=12
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:07

Problem 33

In the following exercises, find three solutions to each linear equation.
$$
y=5 x-8
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:39

Problem 34

In the following exercises, find three solutions to each linear equation.
$$
y=3 x-9
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:35

Problem 35

In the following exercises, find three solutions to each linear equation.
$$
y=-4 x+5
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:19

Problem 36

In the following exercises, find three solutions to each linear equation.
$$
y=-2 x+7
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:33

Problem 37

In the following exercises, find three solutions to each linear equation.
$$
x+y=8
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:30

Problem 38

In the following exercises, find three solutions to each linear equation.
$$
x+y=6
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:39

Problem 39

In the following exercises, find three solutions to each linear equation.
$$
x+y=-2
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:35

Problem 40

In the following exercises, find three solutions to each linear equation.
$$
x+y=-1
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:34

Problem 41

In the following exercises, find three solutions to each linear equation.
$$
3 x+y=5
$$

Karla Conrey
Karla Conrey
Numerade Educator
01:49

Problem 42

In the following exercises, find three solutions to each linear equation.
$$
2 x+y=3
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:16

Problem 43

In the following exercises, find three solutions to each linear equation.
$$
4 x-y=8
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:06

Problem 44

In the following exercises, find three solutions to each linear equation.
$$
5 x-y=10
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:45

Problem 45

In the following exercises, find three solutions to each linear equation.
$$
2 x+4 y=8
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:07

Problem 46

In the following exercises, find three solutions to each linear equation.
$$
3 x+2 y=6
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:15

Problem 47

In the following exercises, find three solutions to each linear equation.
$$
5 x-2 y=10
$$

Karla Conrey
Karla Conrey
Numerade Educator
02:10

Problem 48

In the following exercises, find three solutions to each linear equation.
$$
4 x-3 y=12
$$

Karla Conrey
Karla Conrey
Numerade Educator
03:02

Problem 49

Weight of a baby. Mackenzie recorded her baby's weight every two months. The baby's age, in months, and weight, in pounds, are listed in the table below, and shown as an ordered pair in the third column.
(a) Plot the points on a coordinate plane.
(@) Why is only Quadrant I needed?

Karla Conrey
Karla Conrey
Numerade Educator
01:59

Problem 50

Weight of a child. Latresha recorded her son's height and weight every year. His height, in inches, and weight, in pounds, are listed in the table below, and shown as an ordered pair in the third column.
(a) Plot the points on a coordinate plane.
(b) Why is only Quadrant I needed?

Cory Kuzinski
Cory Kuzinski
Numerade Educator
01:21

Problem 51

Explain in words how you plot the point (4,-2) in a rectangular coordinate system.

Elizabeth Xu
Elizabeth Xu
Numerade Educator
03:18

Problem 52

How do you determine if an ordered pair is a solution to a given equation?

Cory Kuzinski
Cory Kuzinski
Numerade Educator
00:18

Problem 53

Is the point (-3,0) on the $x$ -axis or $y$ -axis? How do you know?

Karla Conrey
Karla Conrey
Numerade Educator
00:26

Problem 54

Is the point (0,8) on the $x$ -axis or $y$ -axis? How do you know?

Karla Conrey
Karla Conrey
Numerade Educator