QUESTION 1
What is the formula for the nth term of the sequence: 20; 16; 12; 8; ...
A
$T_n = 4n - 24$
C
$T_n = -4n + 16$
B
$T_n = 4n + 16$
D
$T_n = -4n + 24$
QUESTION 2
Helen enters the following information into her calculator when $7 - 10 + 5 - (-4)$
attempting to find the slope between the points (5; 7) and (-4; 10).
Which of the following statements is TRUE?
A
She is correct, the slope is 9
C
The slope is actually -3
= 9
B
The slope is actually -9
D
The slope is actually $-\frac{1}{3}$
QUESTION 3
Order the equations below so that they match the order of the graphs above:
1.
2.
3.
(a)
$y = 3^x$
(b)
$y = \left(\frac{1}{3}\right)^x$
(c) $y = -\left(\frac{1}{3}\right)^x$
(d)
$y = -3^x$
A
(b), (c), (a), (d)
B
(d), (b), (a), (c)
C
(b), (d), (a), (c)
D
(c), (d), (a), (b)
4.
