Solve the system of equations and choose the correct ordered pair. 4x + 3y = 16 7x + 6y = 31

4x + 3y = 16
7x + 6y = 31

Note what happens if we mult. the first eqn. by -2:  

-8x - 6y = -32

Combining this with the 2nd equation eliminates the variable y:

-8x - 6y = -32
7x + 6y = 31

-x          = -1, or x = 1.  Sub 1 for x in either of the 2 given eqns to find y:

For example:  4(1) + 3y = 16, so 36 = 12, and y = 3.  Sol'n is (1,3).

The answer will be y=-5+0 because the slope is -5 and the it has to go through y-axis 0