BarD9reqMarEld BarD9reqMarEld

11-07-2016
Mathematics

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find the value of r so that the line that passes through (r,-5) and (3, 13) has a slope of 8. a. (-18/5) b. (3/4) c. 6 d. -141

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olemakpadu olemakpadu

13-07-2016

Slope = Change in y/ Change in x.

8 = (13 - -5) / (3 - r)

8 = 18/(3 -r)

3 - r = 18/8

3 - r = 9/4

3 - 9/4 = r

3 - 2 and 1/4 = r

3/4 = r

r = 3/4 B.

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