Question

Solve the system of equations. 2x - 4y = 10 7x - 9y = 12

Answer 1

These equations are in standard form.

You can graph these equations to find the solution.

Standard form: Ax+By= C

Graph the equations. 

I got (-4.2, -4.6) as the solution. x= -4.2 and y= -4.6

Now, plug those in and see if they equal each other.

2(-4.2)-4(-4.6)= 10

-8.4+18.4= 10

10=10

We know that this works. 

I hope this helps!
~kaikers

Answer 2

2x - 4y = 10
7x - 9y = 12
_________
9x - 5y = 2