Question

Find the equation of the line that goes through the points (4, –1) and (2, –5).

Use slope formula,m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction,to find the slope of a line that passes through the points.

Answer 1

y = 2 x - 9

Explanation:

slope = difference of y / difference of x

m = (-5 - (-1)) / (2 - 4) = -4 / -2 = 2

pass point (4 , -1)

y = mx + b b: y intercept

b = y - mx = -1 - 2 x 4 = -9

equation: y = 2 x - 9