What is the solution to the system?

What is the solution?

How many solutions?

What is the solution?

The ordered pair that satisfies all equations in the system.
In the systems of equation below, I can eliminate x by adding because the coefficients are opposites.
4x + 8y = 20
−4x + 2y = −30
What variable do you eliminate, and what do you multiply the equation(s) by?
5x + y = 9
10x − 7y = −18
Does the system have one, none or infinite solutions?
8x + 4y = 12
y = -2x + 3
What is the value of the y-coordinate of the solution to the system of equations. (2 points)
x - 2y = 1
x + 4y = 7
Solve:(2 pts)
3x + 2y = 16
7x + y = 19