12/10/10
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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| slope | the slope m of a nonvertical line is the ratio of the vertical change (rise) to the horizontal change (run) between any two points (x1,y1) y y1y2) on the line
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| run | the horizontal change in a line
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| rise | the vertical change in a line
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| point-slope form | an equation of a nonvertical line written in the form y-y1=m(x-x1) and has a slope of m
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| standard form | ax+by=c, where a, b and c are real numbers and a and b are not both zero.
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| x-intercept | the x-coordinate of a point where a graph crosses the x-axis
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| y-intercept | the y-coordinate of a point where a graph crosses the y-axis
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| slope-intercept form | a linear equation written in the form y=mx+b where m is the slope and b is the y intercept of the equation's graph
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| family of functions | a group of functions with similar characteristics
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| parent linear functions | the function f(x)=x
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| parallel lines | two lines in the same plane that don't intersect
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| perpendicular lines | two lines in the same plane that intersect to form a right angle
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| direct variation | the relationship of two variables x and y if there is a nonzero number a such that y=ax. if y=ax, then y is said to vary directly with x.
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| inverse variation | the relationship of two variables a and y is there is a nonzero number a such that y=a/x. if y+a/x,
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| best-fit line | the line that most closely follows a trend in data , found using technology
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| negative correlation |
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| positive correlation |
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| regression line | the most accurate best-fit line for a set of data, and can be determined with a graphing calculator
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| scatter plot | a graph used to determine whether there is a relationship or trend between paired data
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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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