What is an equation in two variables?
7.4 Equations in Two Variables

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Mathematics
•
6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An equation that involves two different variables, typically represented as x and y, showing a relationship between them.
2.
FLASHCARD QUESTION
Front
What does the equation y = mx + b represent?
Back
It represents a linear equation where m is the slope and b is the y-intercept.
3.
FLASHCARD QUESTION
Front
In the equation y = 10x + 25, what does the number 10 represent?
Back
The slope of the line, indicating how much y changes for a unit change in x.
4.
FLASHCARD QUESTION
Front
How do you find the value of y when x = 3 in the equation y = 10x + 25?
Back
Substitute x with 3: y = 10(3) + 25 = 30 + 25 = 55.
5.
FLASHCARD QUESTION
Front
What is the dependent variable in the equation c = 0.15s?
Back
c (the commission) is the dependent variable because it depends on the value of s (the sale amount).
6.
FLASHCARD QUESTION
Front
What is the independent variable in the equation c = 0.15s?
Back
s (the sale amount) is the independent variable because it can be chosen freely.
7.
FLASHCARD QUESTION
Front
What does the constant in a linear equation represent?
Back
It represents the rate of change or the slope of the line.
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