Question

Find r (2,r) and (-5,,11) ; m= -2

Answer 1

r=-3

Explanation:

`m=(y_2-y_1)/(x_2-x_1)` -----(A)

Here we are given that

`(x_1,y_1) = (2,r)`

`(x_2,y_2) = (-5,11)`

And the value of m is -2

Replacing them in (A)

`-2=(11-r)/(-5-2)`

`-2=(11-r)/(-7)`

`-7 * -2=11-r`

`14=11-r`

`r=11-14`

`r=-3`

Hence the value of r is -3 and the coordinate is(2,-3)