Answer:

Step-by-step explanation:
We are given:

And we want to find:

This is equivalent to:

Therefore, by substitution:

Rearranging gives:

Combine like terms:

Answer:
Step-by-step explanation:
As x increases four units from -4 to 0, y decreases four units from 0 to -4
slope m = Δy/Δx = -4/4 = -1
The y intercept is at (0, -4) so b = -4
y = -1x + -4
y = - x - 4
as m is negative, slope is negative
Im pretty sure its (1, 4) if its wrong im so so sorry but I do think thats the awnser