Writing Equations from Tables, Graphs and Situations

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•
Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the y-intercept (b) of a linear equation?
Back
The y-intercept (b) is the value of y when x = 0 in the equation of a line, represented as y = mx + b.
2.
FLASHCARD QUESTION
Front
What does it mean for a graph to be proportional?
Back
A graph is proportional if it passes through the origin (0,0) and has a constant rate of change.
3.
FLASHCARD QUESTION
Front
What is the constant of proportionality in the equation y = kx?
Back
The constant of proportionality (k) is the ratio of y to x, indicating how much y changes for a unit change in x.
4.
FLASHCARD QUESTION
Front
How can you determine if a table of values is proportional?
Back
A table is proportional if the ratio of y to x is constant for all pairs of values.
5.
FLASHCARD QUESTION
Front
What is a unit rate?
Back
A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit.
6.
FLASHCARD QUESTION
Front
How do you write an equation from a graph?
Back
To write an equation from a graph, identify the slope (m) and y-intercept (b) and use the form y = mx + b.
7.
FLASHCARD QUESTION
Front
What does a nonproportional graph look like?
Back
A nonproportional graph does not pass through the origin and has varying rates of change.
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