Question

15 POINTS

Consider the line in the coordinate plane that passes through the point (-7, -3) and the origin. Find the slope of a line perpendicular to the line described.
A) - 1, 3
B) - 3, 7
C) - 7, 3
D) 3, 7

Answer 1

• C. -7/3

Explanation:

The slope of the line that passes through points (0, 0) and (-7, -3) is:

• m = (y₂ - y₁)/(x₂ - x₁)
• m = (-3 - 0)/(-7 - 0) = 3/7

Perpendicular lines have opposite-reciprocal slopes:

• -1 / (3/7) = - 7/3

Correct choice is C