Ch. 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Direct Variation Function | a function with a formula of the form y = kx (x is to the power of n) and k cannot equal zero and n must be greater than 0
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| Inverse Variation Function | a function with a formula of the form y = k/x (x is to the power of n). k cannot = 0 and n must be > 0
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| Slope | Slope is rise over run. The slope of a line must be through two points, (x1, y1) and (x2, y2). It is found by Subtracting y1 from y2 and dividing that by x2 - x1
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| Rate of Change | The slope of a line is the rate of change of y with respect to x determined by two points on the line.
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| Mathematical Model | a mathematical model for a real situation is a description of that situation using the language and concepts of mathematics.
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| Combined Variation | When direct and inverse variations occur together, the situation is called combined variation.
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| Law of the Lever | states that to balance a given person seated on a seesaw, the distance d the other person is from the fulcrum is inversely proportional to that person's weight w.
d = k/w
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| Hyperbola | The graph of every function with an equation of the form y = k/x
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Nickp2396
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