Answer:
Step-by-step explanation:
Given the following 3 points:
x y
-56 66
-42 58
-28 50
Check the slope of two line segments between the three points:
(58 - 66)/(-42 - (-56))
= -8/14
= -4/7
(50 - 58)/(-28 -(-42))
= -8/14
= -4/7
As the slopes are the same, the 3 points are on a straight line with slope of - 4/7:
y = -4x/7 + C
Substitute x = -28 , y = 50 into the equation
50 = -4(-28)/7 + C
50 = 16 + C
C = 34
y = -4x/7 + 34
Y-intercept at x = 0:
= 34
