Let us find the slopes of the given lines. Slope of the 1 st line. Y y 1 m x x 1 The equation is useful when we know.
Where and are the sample means and calculated by average x values and average y values.
The slope equation says that the slope of a line is found by determining the amount of rise of the line between any two points divided by the amount of run of the line between the same two points. Y 2x b. At the x-intercept the y value for a point is always 0 At the x-axis y 0. Where and are the sample means and calculated by average x values and average y values.