Question

Help me please please please

Answer 1

Explanation:

let coordinates of D are (x,y)

mid point of AC=midpoint of BD

so{ (-3+4)/2,(1+6)/2}={(x+(-1))/2,(y+4)/2}

(1/2,7/2)={(x-1)/2,(y+4)/2}

(x-1)/2=1/2

x-1=1

x=1+1=2

(y+4)/2=7/2

y+4=7

y=7-4=3

so D is (2,3)