Similar triangles have corresponding sides with proportional lengths.
AB/BC = DE/EF
5/9 = 7.5/EF
5(EF) = 9 * 7.5
5(EF) = 67.5
EF = 13.5
C and D apply to your expression.
Answer:
y=-x-1
Step-by-step explanation:
The formula is (y2-y1)/(x2-x1)
Plug in the values. Be careful two minuses become plus
(-7+4)/(3+6)=-3/9= -1/3
