Explaining is optional, but if you want to you can. It's an easy question but I don't really understand it.

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14

Complete the equation of the live through (-1,6) (7,-2)