luciaaa10
contestada

which line contains the point (3,6)?

a. 4x-y=7
b. 2x+5y=4
c. 7x-y=15
d. x+5y=21

please explain how to solve this. thank you!

Respuesta :

The answer is c because you substitute x for 3 and when multiplied by seven get 21. Then you substitute the y for 6 and get the equation 21-6=15. when you subtarct 21 from 6 you get 15. So the choice c, 15=15 is the only true one.