Nope. Exponentials keep multiplying by the same amount.
A and C just add the same amount each time.
B multiplies by 2, so it is 4*2^x
D multiplies by 1/2 each time, so it is 32 * 1/2^x = 32*2^-x
Choose all that represent an exponential function-
a. x | -3 | -2 | -1 | 0 | 1 | 2 | 3
y | 14 | 10 | 6 | 2 | -2 | -6 | -10
b. x | -3 | -2 | -1 | 0 | 1 | 2 | 3
y | 1/2 | 1 | 2 | 4 | 8 | 16 | 32
c. x | -3 | -2 | -1 | 0 | 1 | 2 | 3
y | -14 | -9 | -4 | 1 | 6 | 11 | 16
d. x | -3 | -2 | -1 | 0 | 1 | 2 | 3
y | 4 | 8 | 16 | 32 | 64 | 128 | 256
I am sorry they are not lined up! I tried my best and I believe the answers are C and D. Can someone check for me?
2 answers
hint: in the last function, .....
4 = 2^2
8 = 2^3
16 = 2^4
what pattern do you see
I notice something similar in b)
4 = 2^2
8 = 2^3
16 = 2^4
what pattern do you see
I notice something similar in b)