Question

Can someone help me with this. Will Mark brainliest.

Answer 1

Step-by-step explanation:

(-2,1), (-7,2)

$y ^{2} - y ^{1} \\ x ^{2} - x ^{1}$

$y ^{2} = - 7$

$y ^{1} = 1$

$x ^{2} = 2$

$x^{1} = - 2$

$m = \frac{ - 7 -( 1)}{2 - ( - 2)?}$

$m = \frac{ - 8}{4?}$

$m = - 2$

I only know how to find the slope.

Answer 2

Answer:

Step-by-step explanation:

Coordinates of B is (3,-4)

You multiply -2 by 2 to get -4 and then create the equation  then you substitue -7 for +7 and add +7 to -4 which gives you 3 (x coordinate of B)

You multiply -1 by 2 to get -2 and then create the equation then you subtract 2 by -2 which gives you -4 (y coordinate of B)

To check your answer use the midpoint formula  

  which will give you the midpoint (-2,-1)