
Spiral Review
Authored by Crystal Bethards
Mathematics
8th Grade
CCSS covered
Used 7+ times

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6 questions
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1.
FILL IN THE BLANK QUESTION
10 sec • 1 pt
What is the y-intercept of the line graphed?
Answer explanation
The y-intercept is where the line crosses the y-axis.
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is the y-intercept for this linear table?
(-2,-6)
(-1,4)
(0,2)
(1,0)
(2,-2)
Answer explanation
In a table, you can find the y-intercept by looking for where x=0.
3.
FILL IN THE BLANK QUESTION
30 sec • 2 pts
What is the slope of the graphed line?
Answer explanation
1) Find two "nice points" and make a triangle
2) divide the vertical change by the horizontal change, (vertical = | , horizontal = ---)
3) check increasing or decreasing. Increasing is positive, decreasing is negative
Tags
CCSS.8.EE.B.5
4.
FILL IN THE BLANK QUESTION
30 sec • 2 pts
What is the slope of the table?
Answer explanation
To find the slope of a table, you need to find Δy and Δx. Remember Δ means change. So you find how y changes (-2) and how x changes (+1). Then slope is Δy/Δx. In this case, that is -2/1 = -2
Tags
CCSS.8.EE.B.5
5.
FILL IN THE BLANK QUESTION
1 min • 3 pts
What is the equation of the graphed line?
Answer explanation
The slope is 3 and the y-intercept is -1. Now we plug in those values into the formula y = mx + b. m= slope, b= y-intercept.
So y = 3x - 1
6.
FILL IN THE BLANK QUESTION
1 min • 3 pts
Write a linear equation that represents the linear function seen in the table?
Answer explanation
Once you have the slope and the y-intercept, you plug them into the formula y = mx + b.
m = -2 , b = 2
y= -2x + 2
Tags
CCSS.8.F.B.4
CCSS.HSF.LE.A.2
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