Please help and show working out of the screenshot below thank you

If chord ab is congruent to chord cd, then what must be true about ef and eg?

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142

Which graph represents the linear function below? y-3=1/2(x+2)