Modeling Relationships with a Line
Authored by Barbara White
Mathematics
8th Grade
CCSS covered
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23 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How can you write the equation for a linear function if you know only two ordered pairs for the function?
Use the two ordered pairs to find the slope (m). Then substitute the slope and one set of ordered pairs into y=mx+b to solve for b.
Use the two ordered pairs to find the y-intercept (b). Then substitute the y-intercept and one set of ordered pairs into y=mx+b to solve for m.
Use the two ordered pairs to find the value of y. Then substitute the the value of y and one set of ordered pairs into y=mx+b to solve for x.
Use the two ordered pairs to find the value of x. Then substitute the the value of x and one set of ordered pairs into y=mx+b to solve for y.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A line passes through the points (5, –7.5) and has a y-intercept 10.
Which is a linear function in the form of y = mx + b for this line?
y = 0.5x + 10
y = –1.5x + 10
y = –3.5x + 10
y = 10x – 3.5
Tags
CCSS.8.F.B.4
CCSS.HSF.LE.A.2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Write a function in the form y=mx+b for the line that passes through the points (2,4) and (6,16)
y = 3x - 2
y = 2x + 4
y = 6x + 16
y = 2x + 6
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sierra is building a skateboard ramp.
She wants the ramp to have a height, h, of 15 inches and a base length, l, of 54 inches.
Which linear function models the situation?
y = (5/18)x
y = (18/5)x
y = 5x + 18
y = 18x + 5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is in slope-intercept form?
Tags
CCSS.8.F.A.3
CCSS.8.EE.B.6
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Is this function linear or nonlinear?
Tags
CCSS.8.F.A.3
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Find the slope given the following points: (5,1) and (3,1)
Tags
CCSS.8.EE.B.5
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