Do you know this answer? Please help

What is this equation in point-slope form?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)