Question

An equation that passes through the point (1,-1) and has a slope of -4

Answer 1

if y=mx+b then y=-4-2

Explanation:

y-y1=m(x-x1) (point slope formula)

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

turns into

y+1=-4x-1

move the 1 from the left to the right

y=-4x-2

Answer 2

y=-4x+3

Explanation:

(1,-1) y=mx+b

-1=-4 × 1+b

b=-1-(-4)(1)

b=3

y=-4x+3