I need help is it a b c or d

Consider the line y = -3/-2 x +6. find the equation of the line that is perpendicular to this line and passes through the point (-9,-3). find the equation of the line that is parallel to this line and passes through the point (-9,-3).

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?