Answer:
c
Step-by-step explanation: If you do the math you can clearly see and I got the answer correct.
⅔+⅔n=-½
6×⅔+6×⅔n=6×-½
2×2+2×2n=-3
4+4n=-3
4n=-3-4
4n=-7
n=-7/4
The graph is shown in the attached image.
direct proportion y=kx , k is constant and k does not equal to 0.
17.5=k(21)
k=5/6
when x =39
y=5/6 ×39
y=32.5
