What is direct variation?
2B Flashcard Review

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Mathematics
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Direct variation is a relationship between two variables where one variable is a constant multiple of the other. It can be expressed as y = kx, where k is the constant of variation.
2.
FLASHCARD QUESTION
Front
How do you find the constant of variation in direct variation?
Back
To find the constant of variation (k), divide the value of y by the value of x (k = y/x) when given a pair of values.
3.
FLASHCARD QUESTION
Front
What is the equation of a quadratic function?
Back
The equation of a quadratic function is in the form y = ax^2 + bx + c, where a, b, and c are constants.
4.
FLASHCARD QUESTION
Front
How do you solve a system of equations graphically?
Back
To solve a system of equations graphically, plot both equations on the same graph and identify the point(s) where they intersect. These points represent the solutions.
5.
FLASHCARD QUESTION
Front
What does it mean for y to vary inversely with x?
Back
If y varies inversely with x, it means that as x increases, y decreases, and vice versa. This relationship can be expressed as y = k/x, where k is a constant.
6.
FLASHCARD QUESTION
Front
How do you find the value of y when given an inverse variation?
Back
To find y in an inverse variation, use the formula y = k/x, where k is the product of x and y from a known pair.
7.
FLASHCARD QUESTION
Front
What is the significance of the vertex in a quadratic function?
Back
The vertex of a quadratic function is the highest or lowest point on the graph, depending on the direction of the parabola. It represents the maximum or minimum value of the function.
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