Is -12.5 a whole number

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

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Each side length of the hexagons is 1, what’s the area of abc