Question

Calculate the slope of a line passing through the points (- 2, 4), (- 1, 1) , and (1, - 5)

Answer 1

Answer:

The slope of the line is -3

Step-by-step explanation:

Slope formula:

m = y₂ - y₁ / x₂ - x₁

Get any two points:

(-2, 4) and (-1, 1)

Solve:

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

m = -3 / -1 + 2

m = -3 / 1

m = -3

Check for the third point just in case.

Two points:

(-1, 1) and (1 , -5)

Solve:

-3 = -5 - 1 / 1 - (-1)

-3 = -6 / 1 + 1

-3 = -6 / 2

-3 = -3

So -3 is the legit slope of the three collinear points.