I need help with this question...mostly I need help with part (c)

Question

256. The equation y − 5 = m(x − 2) represents a line, no matter what value m has.

(a) What are the x- and y-intercepts of this line?

(b) For what value of m does this line form a triangle of area 36 with the positive axes? (c) Show that the area of a first-quadrant triangle formed by this line must be at least 20.

(c) Show that the area of a first-quadrant triangle formed by this line must be at least 20.

Answer 1