Question

Line AB contains points A (8,-4) and B (1,-5). The slope of line AB is

A.) - 7
B.) -1/7
C.) 1/7
D.) 7

Answer 1

C. 1/7

Explanation:

Slope:

`\sf(y_2-y_1)/(x_2-x_1)`

y2=(-5)

y1=(-4)

x2=1

x1=8

Solve.

(-5)-(-4) change to (-5)+4.

(-5)+4=-1

1-8=-7

m=-1/-7

Divide by 1.

-1/1=-1

-7/1=-7

`\sf(-1)/(-7)=(1)/(7)`

m=1/7

The slope of line AB is 1/7, which is our answer.