Finding Slope from a Scatter Plot
8th Grade
•11 Qs
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Finding Slope from a Scatter Plot
Quiz
•
Mathematics
•
8th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The scatter plot shows the price, in cents, of a postage stamp used to mail a letter in the United States for the years from 1958 to 2014. Also shown is a line of fit to model the data.
The equation of the line of fit is y=0.86x−0.71 , where y represents the predicted price, in cents, of a stamp and y represents the number of years since 1958.
What statement best describes the model?
The model estimates an increase, on average, of 0.71 cent per year in the price of stamp.
The model estimates a decrease, on average, of 0.71 cent per year in the price of stamp.
The model estimates a increase, on average, of 0.86 cent per year in the price of stamp.
The model estimates a decrease, on average, of 0.86 cent per year in the price of stamp.
Tags
CCSS.HSF.LE.B.5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The equation for the line of best fit for this data is y = 61.93x - 1.79. According to the model, the slope can be interpreted as:
After 0 hours of driving, they went 61.93 miles.
They drove at a speed of 61.93 miles per hour.
They drove 61.93 miles total.
They drove 61.93 hours total.
Tags
CCSS.HSF.LE.B.5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following could be a possible line of best fit for the data?
y = -5/2x + 20
y = -x + 19
y = x + 20
y = 2/3x + 15
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Create a scatter plot of the data set. Then find the equation of the Line of Best Fit.
y = 0.892x - 1.82
y = 1.82x - 5.02
y = 0.796x + 5.02
y = 1.82x + 5.02
Tags
CCSS.8.EE.B.5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A group of hikers is descending, and the elevation of several of the hikers after a certain number of minutes is shown in the scatter plot.
True or False:
The group of hikers descends about 250 feet every minute.
Hint: What's the unit rate, slope?
True
False
Tags
CCSS.HSF.LE.B.5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
the slope is -5/7, what does that mean?
gain 5 hour of sleep for 7 cups of coffee
lose 5 hours of sleep for 7 cups of coffee
lose 7 cups of coffee for 5 hours of sleep
lose 5 cups of coffee for 7 hours of sleep
Tags
CCSS.HSF.LE.B.5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the slope?
2/3
3/2
-7
-5
Tags
CCSS.8.EE.B.5
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