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Find the value of r so the line that passes through the pair of points has the given slope. (3, 5), (−3, r), m=34

Sagot :

The value (y2) of r = 1/2.

This question relates to equation of a straight line but we are looking for the slope in this case.

Slope

This is the ratio to which we measure the change along the y-axis to the change along the x-axis. The formula is given as

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

Data given;

  • x1  = 3
  • x2 = -3
  • y1 = 5
  • y2 = r
  • m = 34 or 3/4

Substitute the values into the equation and solve for the unknown

NB; we are assuming that the slope here is 34 and not 3/4.

[tex]m = \frac{y_2 - y_1}{x_2 - x_1} \\34 = \frac{r - 5}{-3 - 3}\\34 = \frac{r - 5}{-6}\\[/tex]

cross multiply both sides and make r the subject of formula

[tex]34 * -6 = r - 5\\-204 = r - 5\\r = -204+5\\r = -199[/tex]

the value of r = -199.

This is not mathematically obtainable and we would use 3/4 as the value of slope

[tex]\frac{3}{4}= \frac{r - 5}{-3 - 3}\\\frac{3}{4}=\frac{r - 5}{-6}\\4(r-5) = 3 * -6\\4r- 20 = -18\\4r = -18 +20\\4r = 2\\r = \frac{1}{2}[/tex]

The most logical value of r = 1/2

Learn more on slope here;

https://brainly.com/question/4074386