Lesson 9 Solving Systems of Equations by Substitution Day 2

Lesson 9 Solving Systems of Equations by Substitution Day 2

​

Multiple Choice

Solve the system of equations,

x+3y=-5

9x+3y=3

• (-2, 1)

• (1, -2)

• (-1, -2)

• (2, 1)

Multiple Choice

Solve the system of equations,

y=6x+11

2x-3y=7

• (-4, -2.5)

• (4, 2.5)

• (-2.5, -4)

• (2.5, -4)

Multiple Choice

Solve the system of equations using substitution,

2x-4y=20

x=4

• (-2,4)

• (4, -2)

• (-2, -4)

• (-4, -2)

Multiple Choice

Lin is solving the system of equations:

 $6x-5y=34,\ 3x+2y=8.$  Find her mistake.

• She did not make a mistake.

• In step 2, during distribution -5 time -1.5 x should be +7.5x.

• Her solution to x is wrong.

• Her solution to y is wrong.

Multiple Choice

What is the solution to the system of equations?

 $-4x+3y=23,\ x-y=-7$  

• (-5, 2)

• (-2, 5)

• (-3, 4)

• (4, -3)