Answer:
y = -5
Step-by-step explanation:
First find the gradient of the line:
(y²-y¹)/(x²-x¹)
(-5-5)/(-5-0)
0/5 = 0
Then find the y intercept. This is where X = 0
(0,-5)
Your y intercept is -5.
Put it into the formula y = mx + c
m = 0
c = -5
y = 0x - 5
y = 0 - 5
y = -5