Question

Is the line y = 3x – 7 parallel or perpendicular to 3x + 9y = 9? Explain your answer. Intro Done Go Left Go Right Frame 2 Frame 2 Frame 2 Frame 2 Frame 2 Frame 2 Frame 2 Frame 2 Frame 2 Frame 2 10 of 10

Answer 1

the answer is 6.

Explanation:

on edge i got my question wrong and the answer was 6 <33.

Answer 2

line y = 3x – 7 has slope = 3

3x + 9y = 9
9y = -3x+ 9
y = -1/3x + 1
so this 3x + 9y = 9 has slope = -1/3

Parallel lines , slope is the same
Perpendicular lines, slope is opposite and reciprocal

Answer
Line y = 3x – 7 is perpendicular to 3x + 9y = 9