Question

What is the slope of the line through (- 1, - 7) and (3, 9) ?

Choose 1 answer:

A - 1/4

B

- 4

C 4

D 1/4

Answer 1

C. 4

Explanation:

Use the slope formula:

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

m = the slope.

Substitute the values into the formula:

`(9)/(3) -(-7)/(-1) =(?)/(?)`

Solve:

`(9)/(3) -(-7)/(-1) =(16)/(4)`

Simplify 16/4:

`(16/4)/(4/4) =(4)/(1)=4`