Question

Which pair of points has a negative slope?

A) (-3,17),(2,-8)
B) (-3,13),(3,17)
C) (4,26),(-2,-10)
D) (4,14),(-2,-4)

Answer 1

Option A is the right answer.

Explanation:

The slope is given by :
`(y2-y1)/(x2-x1)`

Putting the values in the formula :

Option A:

`(-8-17)/(2-(-3))=(-25)/(5)` = -5 (negative)

Option B :

`(17-13)/(3-(-3)) =(4)/(6)` (positive)

Option C:

`(-10-26)/(-2-4)=(-36)/(-6)=(36)/(6)` = 6 (positive)

Option D:

`(-4-14)/(-2-4) =(-18)/(-6) =(18)/(6)` = 3 (positive)

Option A is the right answer.