What is a proportional relationship?
Gr8 Math STAAR Review

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A proportional relationship is one in which two quantities maintain a constant ratio. For example, if one quantity doubles, the other quantity also doubles.
2.
FLASHCARD QUESTION
Front
What does it mean for a graph to show a line of best fit?
Back
A line of best fit is a straight line that best represents the data on a scatter plot, indicating the trend of the data points.
3.
FLASHCARD QUESTION
Front
How can you determine if a graph is proportional?
Back
A graph is proportional if it is a straight line that passes through the origin (0,0).
4.
FLASHCARD QUESTION
Front
What type of correlation is indicated by a downward sloping scatterplot?
Back
A downward sloping scatterplot indicates a negative correlation, meaning as one variable increases, the other decreases.
5.
FLASHCARD QUESTION
Front
What is the rule for a dilation that enlarges a figure?
Back
The rule for an enlargement dilation is of the form (x,y) → (kx, ky) where k > 1.
6.
FLASHCARD QUESTION
Front
What is the difference between enlargement and reduction in dilation?
Back
Enlargement increases the size of a figure (k > 1), while reduction decreases the size of a figure (0 < k < 1).
7.
FLASHCARD QUESTION
Front
What does it mean if a graph does not pass through the origin?
Back
If a graph does not pass through the origin, it is considered non-proportional.
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