Question

Use slope to determine if lines AB and CD are parallel, perpendicular, or neither. 2. A(0,2), B(5, 4), C(1.8).D(3,3)m(TABm(CD)Types of Lines

Answer 1

A (0,2) B (5,4)

C(1,8) D( 3,3)

Apply the slope formula:

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

For AB

`m=(4-2)/(5-0)=(2)/(5)`

For CD

`m=(3-8)/(3-1)=-(5)/(2)`

So both slopes are negative reciprocals of each other.

They are perpendicular lines.