Westonci.ca is your trusted source for accurate answers to all your questions. Join our community and start learning today! Connect with a community of experts ready to help you find accurate solutions to your questions quickly and efficiently. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.


which ordered pair is a solution of the system of equations

y=-3/5x

x-3y=-42

A.(70,-42)

B.(-21,63/50)

C.(5,3)

D.(-15,9)




Sagot :

AL2006
y=-3/5x
x-3y=-42

Plug the first one into the second one, for 'y' :

x - 3(-0.6x) = -42
x + 1.8x = -42
2.8x = -42

x = -42/2.8 = -15

Plug this back into the first equation above:

y = -0.6(15) = 9

The 'ordered pair' is (-15, 9).  That's choice (D.).