Question

Help

If x = 3 and 3x − y = 9, what ordered pair represents the solution?
A. (0, 3)
B. (-3, 0)
C. (0, 0)
D. (3, 0)

Answer 1

Well, you can actually tell it is D without solving it because it is the only one that has the x value as 3. But just to be sure.

Plug in 3 for x into the equation:
3(3)-y=9 and solve for y
9-y=9 subtract 9 from both sides
-y=0 so y=0

so the value is (3,0)