Line and Curve of Best Fit Review
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When using Desmos to find the curve of best fit, what do I need to enter first?
y1 ~ ax12 +bx1 + c
the equation
the table/chart of values
the vertex
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calculate the quadratic regression function for this table of values to the nearest tenth.
f(x) =
2x2 - 9x + 10
f(x)=
3x2 + 9x - 10
f(x) =
3.1x2 - 9.2x - 10.3
f(x) =
2.1x2 - 8.6x + 10.1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Given the graph, what would be in the output (7) when the input (x) is 6?
1125
850
700
600
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Given the following scatter plot, which equation best models the data? (Hint: in this specific case, you don't really need Desmos)
y = -8.25x + 56
y = -8.25x2 + 56x
y = 8.25x2 + 56x
y = -8.25x3 + 56x
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Match the table with the correct equation:
y = -.08x2 + 5.94x +28.80
y = -1.2x2 + 3.2x +3.2
y = 0.5x +9
y = 0.7 x2 + 2.7x +8.7
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Match the table with the correct equation:
y = -.08x2 + 5.94x +28.80
y = -1.2x2 + 3.2x +3.2
y = 0.5x +9
y = 0.7 x2 + 2.7x +8.7
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using the Curve of Best fit for #11. Predict the value of y when x = 3.
5
7
9
11
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