Unit 3 Review Linear Equations (Graded) Block 3

Flashcard
•
Mathematics
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the slope of a line that is parallel to a line with a slope of 4/3?
Back
4/3
2.
FLASHCARD QUESTION
Front
If a cup of coffee cools 40 degrees every minute, what equation represents the temperature (y) after x minutes if it starts at 210 degrees?
Back
y = -40x + 210
3.
FLASHCARD QUESTION
Front
Using the line of best fit, how tall would a tree be 30 years after it was planted if the height is predicted to be 37 feet?
Back
37 feet
4.
FLASHCARD QUESTION
Front
What type of association does a graph show if it indicates no correlation between the variables?
Back
none
5.
FLASHCARD QUESTION
Front
In the equation y = 40x + 150, what does the y-intercept represent?
Back
150, the starting amount of his savings account.
6.
FLASHCARD QUESTION
Front
What is the definition of slope in the context of linear equations?
Back
Slope is the ratio of the rise (change in y) to the run (change in x) between two points on a line.
7.
FLASHCARD QUESTION
Front
What does a positive slope indicate about the relationship between two variables?
Back
A positive slope indicates that as one variable increases, the other variable also increases.
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