Substitute Values into an Equation and Solve for a Variable
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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19 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
When using the __________ method, you plug in a value into an equation to solve for another variable value.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
x = 3
y = 2x + 5
(11,3)
(3,11)
No Solution
(3,10)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
solve by substitution: y=3x+14
y=-4x
y=3
y=1
y=2
y=4
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
DRAG AND DROP QUESTION
1 min • 1 pt
Solve the system of linear equations by substitution.
-5x + 3y = 51
y = 10x - 8
(a) (b)
y = -22
x = -3
x = 59/25
y = 15.6
x = 3
y = 22
x = -8
y = 4
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
DRAG AND DROP QUESTION
1 min • 1 pt
Solve the system of linear equations by substitution.
y = -22
x = -3
x = 59/25
y = 15.6
x = 3
y = 22
x = -8
y = 4
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
DROPDOWN QUESTION
1 min • 1 pt
Solve the system of linear equations by substitution.
5x + 2y = 9
x + y = -3
(a) (b)
y = -22
x = -3
x = 1
y = -4
x = 5
y = -8
x = -8
y = 4
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the value of k if (-4, -5) is a solution of the equation: 3x - 4y = K
K = 6
K = - 6
K = 8
K = - 4
Answer explanation
3x - 4y = K Substituting x = - 4 and y = - 5 in the equation, we get, 3(- 4) - 4(- 5) = K - 12 + 20 = K K = 8 Therefore, the value of K = 8
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