Question

Given the function y = 5x – 7, how does the y-value change as x increases by 1?

A.
The y-value decreases by 7.
B.
The y-value decreases by 2.
C.
The y-value increases by 12.
D.
The y-value increases by 5.

Answer 1

y'=5x-7
y=5(x+1)-7
y=5x+5-7
y=y'+5
increases by 5, D