Question

Solve the system of equations by the addition method.



Choose one answer.
a. (9, 4)
b. (4, 9)
c. infinite number of solutions
d. no solution

Answer 1

You need to add the two equations together, combining like terms.

4x+y=25
+
4x-y=7

8x=32
x=4

Then plug x back into one of the equations.

4(4)+y=25
y=9

Answer 2

So it would be A?

Answer 3

No, it would be B. The 4 x the first coordinate, and the y is the second coordinate.

Answer 4

Oh Thank yo so much!