Question

A linear function passes through the points (-4, 2) and (5, -16). What is the y-intercept?

Answer 1

f(x) = ax +b
f(-4) = 2
f(5) = -16
-4a +b = 2
5a + b = -16
a = -2
b = -6
y-intercept = f(0) = -6

Answer 2

thx