H(13) i need help with this problem​

The system of equations graphed below has how many solutions? y = 2x + 2

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

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