Question

The table represents a linear function.

What is the value of the function when x = −3?

−13

−9

−5

9

Answer 1

find the slope
from (-2,-2) to (-1,1) is a slope of
(-2-1)/(-2-(-1))=-3/(-2+1)=-3/-1=3

y-1=3(x+1)
y=3x+4

when x=-3
y=3(-3)+4
y=-9+4
y=-5

answer is -5