Direct Variation
Authored by Laura Delemos
Mathematics
9th Grade
CCSS covered
Used 6+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Is this direct variation?
Answer explanation
To be direct variation, a graph must be a LINE and pass through (0,0).
Tags
CCSS.8.EE.B.5
CCSS.8.EE.B.6
CCSS.8.F.A.3
CCSS.8.F.B.4
CCSS.8.SP.A.3
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Is this direct variation?
Answer explanation
To be direct variation, a graph must be a LINE and pass through (0,0).
Tags
CCSS.8.EE.B.5
CCSS.8.EE.B.6
CCSS.8.F.A.3
CCSS.8.F.B.4
CCSS.8.SP.A.3
CCSS.8.SP.A.2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the given graphs is a direct variation?
Answer explanation
To be direct variation, a graph must be a LINE and pass through (0,0).
Tags
CCSS.8.EE.B.5
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which equation(s) represent direct variation?
y = 3x + 2
2y = 10x + 6
8x - 3y = 0
-4y = 2x
Answer explanation
Make sure to solve for y and then check if your equation looks like y = mx.
Direct Variation must be in the form y = mx where the y-intercept is 0.
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The value of y varies directly with x. Which function represents the relationship between x and y if y = 14 when x = 6.
Answer explanation
Because direct variation is PROPORTIONAL, the slope (constant of variation) can be found by y/x.
y = mx is the correct equation where m is simply y/x.
Tags
CCSS.8.F.B.4
6.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
Answer explanation
Replace x with -6 and type in your calculator.
Tags
CCSS.6.EE.C.9
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