I am basing my answers off of Pikachu's for Part a and b
c) Y must be (-1,-2) (directly below c(-1-3))
If YZ are a diameter, Z is directly 10 units above Y, since the centre is between them
Therefore, Z(-1,8)
d) For ZXY to be 90 degrees, ZX must be perp. to XY
Eqn of XY is -y=-3x-1 (m=3)
Eqn...