Question

Graph the function y=5(14)x
. Complete the ordered pairs for the x-values of −2
, −1
, 0, and 1 by finding the y-values.(1 point)

(−2,0.45)
, (−1,0.67)
, (0,1)
, and (1,1.50)


(−2,80)
, (−1,20)
, (0,5)
, and (1,1.25)


(−2,−2.5)
, (1,1.25)
, (0,0)
and (1,1.2)


(−2,−2.99)
, (−1,−1.49)
, (0,0)
, and (1,1.49)

Answer 1

The correct set is: (-2, 80), (-1, 20), (0, 5), (1, 1.25).

Explanation: y = 5*(1/4)^x.
- x = -2: y = 5*(1/4)^(-2) = 5*4^2 = 5*16 = 80
- x = -1: y = 5*(1/4)^(-1) = 5*4 = 20
- x = 0: y = 5*(1/4)^0 = 5*1 = 5
- x = 1: y = 5*(1/4)^1 = 5*(1/4) = 1.25