The point (12, 9) is included in a direct variation. what is the constant of variation?

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x

What is the slope of the line (-7,2) (4,6)