Can you explain this to me

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.