 Given (0, 9) and (6, -9), find the midpoint, distance, slope, and equation of the line.

(Last Updated On: September 10, 2019)

Problem: Given these pairs of points, (0, 9)) and (6, -9), find the midpoint, distance, slope, and equation of the line. Solutions:

• To find the midpoint, average the x coordinates and y coordinates. The midpoint is • To find the (always zero or positive) distance, use the formula   • To find the slope, use the formula  The equations of the line are

Method 1: • Plug in one known point (say, (0, 9)) and the calculated slope.  • Now plug b and m into the line equation:
• Method 2: • Plug in one known point (say, (6, –9) ) and the calculated slope.  • NOTE:

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credit: Todd

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