Question

If (10,3) and (6,31) are two

anchor points on a trend line,
then find the equation of the
line.​

Answer 1

y = - 7x + 73

Explanation:

y = mx + b m: slope b: y intercept

m = (y-y') / (x-x') = (31-3) / (6-10) = 28 / - 4 = -7

b = y - mx = 3 - (-7) x 10 = 73

equation: y = -7x + 73

check: 31 = -7 x 6 +73 = -42 + 73 = 31 (6,31)