Question

Find the equation of the line that passes through (3,4) and m = -4.

Answer 1

y = mx+b

we know m

y = -4x+b

now plug in the pointto solve for b

4 = -4*3 = b

can you do th rest?

Answer 2

That's a good way to do it^.
You can also put what you have into Point-Slope form. Then change it into slope-intercept.

Answer 3

that should say 4 = -4*3+b

Answer 4

y - y1 = m(x - x1)
y - 4 = -4(x - 3)
And just solve for y.

Answer 5

y=16-4x

Answer 6

y=y=-4x+16

Answer 7

Yep, nice work(: