Question

Solve the following system by using graph paper or graphing technology.
2x + 2y = –6
3x – 2y = 11
What is the solution to the system?

Answer 1

Each equation represents a line. Graph them both and the point where they cross gives the coordinates of the solution. The x,y coordinates are the x and y values that satisfy both equations.

Answer 2

(–1, –7)

(1, –4)

(2, –1)

(3, –2)

Answer 3

If you don't need to show your work (the actual graph) just substitute each solution pair into the equations and whichever pair satisfies both is the solution.

Answer 4

like i kinda of understand but i get it wrong

Answer 5

2(-1)+2(-7)=-6 First option
2(1)+2(-4)=-6 Second
2(2)+2(-1)=-6 Third
2(3)+2(-2) = -6 Fourth
Solve the left side on each option. Which one comes out as -6?

Answer 6

Next, take the values you now think of the solution and substitute them also on the second equation. If they give the correct answer, you're done.