Chapter 7 Test (Algebra)

Use substitution to solve the system of equations n=3m-11 2m+3n=0

(3,-2)

Use elimination to solve the system of equations x-y=5 x+y=3

(4,-1)

Use elimination to solve the system of equations x+6y=10 x+5y=9

(4,1)

The ordered pair (3,2) is the solution of which system of equations?

(Y=-1/3 + 3) (Y=2x - 4)

If x=2 and 3x+y=5, what is the value of y?

-1

Use elimination to solve the system of equations 2x+5y=7 3x+6y=3

-9, 5

Use elimination to find the value of x in the solution for the system of equation 2x+2y=10 2x-3y=5

10

To eliminate the variable y in the system of equations, multiply the second equation by which number? 6x+4y=22 2x-y=1

4

When solving the system of equations, which expression could be substituted for "r" in the second equation? (r=4-s) (3r+2s=15)

4 - s