9514 1404 393
Answer:
B. 24/9
Step-by-step explanation:
The linear dimensions are proportional in similar figures, so we have ...
altitude/side = x/4 = 6/9
Multiplying by 4 gives ...
x = 24/9 . . . . matches choice B
-11
y=-12/7 - 9x/7
that is the answer