Representations of Linear Functions

Quiz
•
Mathematics
•
9th Grade
•
Hard
+3
Standards-aligned
Anthony Clark
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
y = -2x - 1
Slope: ___
Y-intercept: ___
Slope: -1
Y-intercept: -2
Slope: -2
Y-intercept: -1
Slope: 2
Y-intercept: 1
Slope: 2
Y-intercept: -1
Answer explanation
The # being multiplied by the variable is the slope, so we locate -2x and identify the slope = -2. The # being added/subtracted once is the y-intercept, so y-intercept = -1.
Also, remember to look IN FRONT of the number for its sign.
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
y = 5 - 7x
Slope: ___
Y-intercept: ___
Slope: -7
Y-intercept: 5
Slope: 5
Y-intercept: -7
Slope: 7
Y-intercept: 5
Slope: -5
Y-intercept: 7
Answer explanation
The # being multiplied by the variable is the slope, so we locate -7x and identify the slope = -7. The # being added/subtracted once is the y-intercept, so y-intercept = 5.
**CAREFUL because the numbers are not always in the same order.
Also, remember to look IN FRONT of the number for its sign.
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
y = x
Slope: ___
Y-intercept: ___
Slope: 0
Y-intercept: 1
Slope: 0
Y-intercept: 0
Slope: 1
Y-intercept: 1
Slope: 1
Y-intercept: 0
Answer explanation
The # being multiplied by the variable is the slope, so we locate x and identify the slope = 1 since there is an INVISIBLE 1 in front of any lonely variable. We usually don't write 1x because that is silly and it is obvious there is one x.
The # being added/subtracted once is the y-intercept, so y-intercept = 0 since nothing is being added or subtracted.
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Slope:
Answer explanation
The rate of change in this word problem is 2 since Mario is playing 2 more hours A day.
Key words are often "each," "every," "a," and other words that hint at a constant change.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
X: 2 hours per day
Y: 34 hours
X: total hours played
Y: days playing 2 hours
X: days playing 2 hours
Y: total hours played
Answer explanation
The x is the first variable that's changing, which is determined by how many DAYS Mario plays for 2 hours extra.
The y is the outcome, which is the total amount of hours he will have played over time.
Tags
CCSS.8.EE.B.5
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Select ALL correct equivalent equations.
y=mx+b equation:
y = 2x + 34
y=mx+b equation:
y = 34x + 2
y=mx+b equation:
y = 34 + 2x
y=mx+b equation:
y = 2 + 34x
Answer explanation
As long as the equation contains 2x and 34, you can arrange the terms in either order.
The 2 must be connected to x since Mario is playing 2 hours, but we don't know for how many days.
The 34 must be by itself because it's the starting amount of hours and should only be added once.
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
7.
OPEN ENDED QUESTION
1 min • 1 pt
Describe how you can identify the slope in the table.
Evaluate responses using AI:
OFF
Answer explanation
For every year, how do you see the weekly paycheck changing? What is the pattern?
Tags
CCSS.8.EE.B.5
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