chapter2
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 | Is a function with a formula of the form y=kx^n, with k not equal to 0 and n>0.
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Inverse-variation function | Is a function with a formula of the form y=k/x^n, with k not equal to 0 and n>0.
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Fundamental theorm of varation | Two parts:
A)if y varies as x^n and x is multipuled by c then y is multipuled by c^n.
B)if y varies inversely as x^n, and x is multiplied by a nonzero constant c, then y is divided by c^n.
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Slope | The steepness of a line is measured by slope.
EQ)slope=change in vertical distance/change in horizontal distance or in more simple terms rise /run.
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Branches | Each hyperbola has 2 seperate parts.
EQ) no exact equation.
EX)when k>0 the branches lie in the second and fourth quadrants. Meaning the domain and range are the set of all nonzero real numbers.
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Combined variation | When direct and inverse variations occur together.
EQ)no exact equation
EX) y=kx/z = y varies directly as x and inversely as z.
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mathematical model | Is a description of that situation using the language and concepts of mathematics.
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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:
kaleighbrown
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