Linear Equations
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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| Variable | A letter representing a changing or unknown amount.
In y = 2x – 4, y and x are ______________.
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| Constant | A term in an equation with no variable.
In y = 2x – 4, 4 is a ____________.
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| Coefficient | The number that is being multiplied by a variable.
In y = 2x – 4, 2 is a ____________.
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| Slope | The angle of a line. It is represented by Δy/Δx or rise/run.
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| Slope-intercept form | An equation in the form y = mx + b. m is the slope and b is the y-intercept.
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| Standard form (of a line) | An equation in the form ax + by = c. The coefficient of x (a) must be a whole number and b and c must be integers.
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| Horizontal | A flat line running from right to left.
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| Vertical | A line running up and down.
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| Parallel | Two lines with the same slope. They are always the same distance from each other and never cross.
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| Reciprocals | Two numbers that are fractions that are flipped. 2/3 and 3/2 are ____________.
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| Perpendicular | Two lines that are at right angles to each other. There slopes are negative reciprocals of each other.
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| Proportional change | If y/x is always the same for a function or related situation. These functions are always in the form y = kx. They are straight lines and have a y-intercept of 0.
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| Directly proportional | If the equation for a function can be written in the form y = kx or y/x=k, its variables are considered to be ______________ proportional.
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| Inverse variation | If x times y always equals the same number, they are said to be vary _________ or have __________ variation. These functions are always in the form xy = k or y=k/x.
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| Cconstant of proportionality | In the equations y = kx, y/x=k, xy = k and y=k/x, k is the _________________________.
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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:
meminot
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