Question

Use the graph to write a linear function that relates y
to x
.

Answer 1

y = -7/2x - 1

Explanation:

Using coordinates (-2,6) and (0,-1)

then slope m = (y2-y1)/(x2-x1)

m = (-1 - 6)/(0 - -2) = -7/2

so y = mx+ b

y = -7/2x + b

Using (0,-1)

y = -7/2x + b

-1 = -7/2(0) + b

b = -1

so y = -7/2x - 1