Answer:
The equation is;
y = -2x + 1
the answer belonging in the green question mark is -2
Step-by-step explanation:
We start by getting the slope
The slope can be obtained by selecting any two points and applying the slope formula
let us select the points;
(1,-1) and (3,-5)
the slope formula is;
m = (y2-y1)/(x2-x1)
m = (-5-(-1)/(3-1)
m = (-5+1)/2 = -4/2 = -2
The y intercept is the value of y when x = 0
As it can be seen, y = 1 when x = 0
so the equation of the relation is;
y = -2x + 1
