Solving by Substitution Method Steps
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
Used 3+ times
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18 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The first step in solving using the substitution method is __________.
get x by itself
get y by itself
get either variable by itself
add the equations together
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Step 3: After substituting the first equation into the second one and working it out, I got x = 1. What should I do next? Then do it.
Fill in 1 for x in y = 6x y = 6(1) y = 6
Fill in 1 for y in y = 6x 1 = 6x 1/6 = x
Fill in 1 for y in 2x + 5y = 32 2x + 5(1) = 32 2x + 5 = 32 2x = 27 x = 27/2
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Example 1
Step 4:
What is the solution to the system:
y = 6x
2x + 5y = 32
Given I got x = 1 from step 2 and y = 6 from step 3.
(1, 6)
(6, 1)
Tags
CCSS.HSA.REI.C.7
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using substitution, what is the correct next step? I am not interested in the answer.
5x - (2x) = 9
5(2x) - y = 9
(3,6)
(6,3)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using substitution, what is the correct next step? I am not interested in the answer.
3x - 7(-2y-21) = 41
3(-2y-21) - 7y = 41
-2(41-3x) - 21
(-5,-8)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve this system by substitution.
(1, -4)
(1, 4)
(-4, -7)
(-7, -4)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
No solution
Infinitely many solutions
(-3,7)
(-2,-6)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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