Question

The points in the table lie on the graph of a linear function.
x -2 -1 0 1 2
y 3 4 5 6 7

Which could be the function?

A
y=3x+1y=3x+1y=3x+1
B
y=3x+3y=3x+3y=3x+3
C
y=x+5y=x+5y=x+5
D
y=2x+3y=2x+3y=2x+3

Answer 1

Compute the slope: as x increases by 1, y increases by 1, so slope = 1. Thus y = x + b and using (0,5) gives b = 5. So y = x + 5 — choice C.