contestada

The graphs of the two lines 4x=3y+23 and 4y+3x=-19

A. Do not intersect

B. Are identical

C. Intersect at (-2,5)

D. Are perpendicular

Respuesta :

answer: D. Are perpendicular

4x=3y+23 slope = 4/3
4y+3x=-19 slope = -3/4