Analyse and Interpret Graphs
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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| What is the y-intercept? | the point at which the graph line crosses the y axis. When x=0.
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| What is the y intercept from the following equations? 5x +7 | 7
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| What is the y intercept from the following equations? 89x -34 | -34
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| What is the y intercept from the following equations? 12x + 45 | 45
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| What is direct variation? | when the y intercept equals zero, when there is no additional number added or subtracted onto the equation.
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| What is a partial variation? | When the y intercept does NOT equal 0. When there IS AN additional number added or subtracted onto the equation.
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| Which equations are direct variations? y= -x, y= 0.25 - 1.3, y= 89x | y= -x and y= 89x are direct variations.
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| Which variations are partial variations? y= 0.98x + 78, y= 4x - 67, and y= 90x. | y= 0.98x + 78 and y= 4x - 67 are partial variations.
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| What is the slope of a graph (or the rate of change)? | A measure of the STEEPNESS of a line.
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| How do you tell if an equation is linear? | Has NO VISIBLE exponents
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| How do you tell if a table of values is linear? | Has a consistent pattern.
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| How do you tell if a graph is linear? | The points line up in a straight line.
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| How do you tell if a graph is partial or direct? | Direct: will cross over the 0,0 spot, if not, it is partial.
If one of the co-ordinates or one of the places in the table of values is 0,0 then it's direct.
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| Equation | a statement that two mathematical expression are equal and have the same value.
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| Variable | a letter that represent an unknown number.
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| Numerical Coefficient | a number that multiplies the variable.
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| Constant | a known value in an equation or an expression.
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| Opposite Operation | operations that "undo" other operations. sometimes called "inverse operations" addition/subtraction
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| Distributive Property | the rule that states a(b+c) = ab
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| What is the gradient of y = 3x+4 | 3
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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.
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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:
garfieldwhitebooi
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