Answer:
m=-4/5 and b=1
Step-by-step explanation:
The original formula is y=mx ±b and when asked to find those they are placed in the formula.
Slope = -2
Y intercept = 4
Equation. y = -2x +5
Using points, (1,2) and (3,-2)
Slope = (-2-2)/(3-1) = -4/2 = -2
-2 = (y-3)/(x-1)
-2(x-1) = y-3
-2x +2 = y-3
y = -2x +2 +3
y = -2x +5
y=5x and y=40 when x=8
Answer: The slope is -2
