Group and factor out the greatest common factor then combine. 6(3x+y)
D and E are the ones that aren’t functions because they use the x-values more then once
Answer:
Yes, lines CD & AB are perpendicular
Step-by-step explanation:
AB slope: y = -12/8x + 7
CD slope: y = 6/9x - 6
Once the slopes are simplified:
AB: -3/2
CD: 2/3
Hope this helps!