Answer the very simple question below!

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 point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?