Jill wants to solve the following system using the elimination method: y = x + 8 y = 3x − 11 What number should the equation y = x + 8 be multiplied by to eliminate x? −1 −2 −3 3

Y = x + 8
y= 3x - 11
u would multiply y = x + 8 by -3 to eliminate the x’s

Which of the following ordered pairs represents the solution to the system given below?
x − 3y = 12
2x + 6y = 60
(0, −4)
(12, 0)
(3, 21)
(21, 3)

that would be (21,3)

The work of a student to solve a set of equations is shown below:
Equation 1: m = 8 + 2n
Equation 2: 4m = 4 + 4n
Step 1: −4(m) = −4(8 + 2n)
4m = 4 + 4n
Step 2: −4m = −32 − 8n
4m = 4 + 4n
Step 3: −4m + 4m = −32 − 8n + 4n
Step 4: 0 = −32 − 4n
Step 5: n = − 8
In which step did the student first make an error?
Step 1
Step 2
Step 3
Step 4

step 3

Maria wants to solve the following system using the elimination method:
4x + 9y = 59
x + y = 17
What number should the equation x + y = 17 be multiplied by to eliminate y?
4
−4
9
−9


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