Question

A line goes through points (-2, 18) and (4, 3). What is the slope of the line?

A. 12

B. -1.25

C. -2.5

D. -5

Answer 1

C. -2.5

Explanation:

Slope is:
`m=(y_2-y_1)/(x_2-x_1)`

We are given the points (-2,18) and (4,3).

`m=(3-18)/(4-(-2))= (-15)/(6) =-(15)/(6)= -(5)/(2)`

The options are given in decimals.

`-5/2=-2.5`

Option C is the correct answer.

Answer 2

-2.5

Explanation:

The slope can be found by

m = (y2-y1)/(x2-x1)

= (3-18)/(4- -2)

= -15/(4+2)

=-15/6

= -5/2

-2.5