Answer:
y = 1x + 82
Step-by-step explanation:
Formula is y = mx + b
m is the slope
slope = change in y / change in x = (78 - 70) / (-4 - -12) = 8/8 = 1
m = 1
Now to find b, substitute any coordinate in the equation. Let's use (-12, 70).
y = 1x + b
70 = 1(-12) + b
82 = b
So the equation is y = 1x + 82
