Question

Devin said that AB and CD for A(-2, 0), B(2, 3), C(1, -1), and D(5, --4) are parallel. Explain and correct Devin's error.

Answer 1

See below

Explanation:

Slope of AB is correct

Slope of CD is incorrect

• Slope of AB = (3 - 0)/(2 - (-2)) = 3/4
• Slope of CD = (-4 - (-1))/(5 - 1) = -3/4

Slopes are different, lines are not parallel