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Ch 8 Vocab.
Question | Answer |
---|---|
what is a set of ordered pairs? | relation |
what are the first coordinates of a relation? | domain |
what are the second coordinates of a realtion? | range |
what is when each memeber of the domain is paired with exactly one member of the range? | function |
what is any vertical line that passes through at most one point on the graph. if you can find a vertical line that passes through two points on the graph, then the relation is NOT a function? | vertical-line test |
what is an ordered pair that makes such an equation a true statement? | solution |
what is any equation whose graph is a line? | linear equation |
what is the ratio that describes the tilt of a line? | slope |
what is the point of the line where the line crosses the y-axis? | y-intercept |
the equation y= mx + b is what? | slope-intercept form |
what is when you use f(x) instead of y? | function notation |
what is an equation that describes a function? | function rule |
what is a graph that shows the relationship between two sets of data? | scatter plot |
what happens when one set of values increases, and the other set tends to increase? | positive correlation |
what is when one set of values increases, and the other set tends to decrease? | negative correlation |
what is when the values sho no relationship? | no correlation |
what closely fits the data points in the scatter plot? | trend line |
what do two or more linear equations form? | system of linear equations |
what happens if you replace the equal sign in a linear equation with >,<,greater than or equal to, or less then or equal to? | linear inequality |
what do two or more linear inequalities form? | system of linear inequalities |