Question

i was pretty sure i knew the right answer but i'm doubting myself lol

if i get this wrong and the few next ones it'll ruin my score completely and this is due in like 30 minutes

the answer would be 9/4 right?

Answer 1

Line c
slope = -4/9

Find the slope of line d
m₁ × m₂ = -1
-4/9 × m₂ = -1
m₂ = -1 × -9/4
m₂ = 9/4

You got right answer