Question

Type ALL the steps of writing the equation of the line given the slope of the line is −4 and a point on the line is (−2,1).

Answer 1

y = -4x - 7

Explanation:

we use the slope intercept formula given by; y = mx + b

b = y intercept, which is when x = 0

m = slope

so they tell us the slope.. we just need to find b - the y intercept.

y = mx + b

plug in your coordinates (-2,1)

1 = -4(-2) + b

1 = 8 + b

1 - 8 = b

-7 = b

put it all together.

y = -4x - 7