Answers

2016-07-07T20:13:35+08:00
The equation of a line expresses a relationship between x and y values on the coordinate plane. For instance, the equation y = x expresses a relationship where every x value has the exact same y value. The equation y = 2x expresses a relationship in which every y value is double the x value, and y = x +1 expresses a relationship in which every y value is 1 greater than the x value.
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