Answer:
(20, 800) and (27, 1080)
Step-by-step explanation:
Find slope:
m = (y2 - y1) / (x2 - x1)
= 80 - 40 / 2 -1
= 40
Find b, can use any data points above. I'll just pick the first one (1, 40):
y = mx + b
40 = 40(1) + b
b = 0
Use m and b to form equation of a line:
y = mx + b
y = 40x + 0
y = 40x
Use substitution with the points in equation, if they equal then it'll lie on line.
y = 40x
Point (20, 800)
800 = 40(20)
800 = 800
Point (27, 1080)
1080 = 40(27)
1080 = 1080
The other points don't equal so they don't work.
