Question

PLS HELP MEE!

4) Practice: Organizing Information
Answer the questions and complete the steps to solve the system of equations below.
10x-8y=-2
9x+8y=59


1. Which variable will you eliminate? Explain your choice.


2. Add the two equations.


3. Solve the equation for x. Show your work.




4. Substitute that value for x into either equation and solve for y. Show your work.



5. Write your solution as an ordered pair (x, y).


6. Use substitution to check your solution for the system. Show your work.

Answer 1

1. Eliminate Y because when both equations are added they will cancel each other out because of negative plus positive.

2. 19x=57

3. x=3

4. 10(3)-8y=-2

30-8y=-2

-8y=-32

y=4

5. (3,4)

6. Now we use the equation that we DID NOT USE TO SOLVE

9(3)+8(4)=59

27+32=59 which is true