Solve the system
2x+y=-3
-2y=6+4x

Write each equation in slope-intercept form.

-2x + -3

-2x + -3

What do the equations have in common?

- The slopes are the same.

- The y-intercepts are the same

- The lines are the same.

The system represents lines that

✔ coincide therefore the system has

✔ infinitely many solutions.

15

Step-by-step explanation:

A^2=b^2=c^2 so 20^2+b^2=25^2 so 625=400+b^2 so b^2=225 so b=15