Question

In the following exercises, graph each pair of equations in the same rectangular coordinate system. $y=-\frac{1}{2} x$ and $y=-\frac{1}{2}$

   In the following exercises, graph each pair of equations in the same rectangular coordinate system.
$y=-\frac{1}{2} x$ and $y=-\frac{1}{2}$
Intermediate Algebra
Intermediate Algebra
Lynn Marecek 1st Edition
Chapter 3, Problem 31 ↓
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In the following exercises, graph each pair of equations in the same rectangular coordinate system. $y=-\frac{1}{2} x$ and $y=-\frac{1}{2}$
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Transcript

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00:01 We can graph the equation y equals negative one -third x by creating a table of values.
00:08 When we pick a value for x, we can substitute it into the equation and solve for y.
00:14 So when x equals negative 3, y equals negative 1 3 times negative 3.
00:24 Well, we know a negative times a negative is a positive, so that would be 3 over 3, which is just 1.
00:32 Next we can solve for when x is zero.
00:36 Y equals negative one -third times zero.
00:41 So y equals zero.
00:45 When x equals three, y equals negative one -third times three.
00:53 So a negative times a positive will get us a negative answer.
00:57 And three times one -third is one...
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