A line passes through point (8, 2) and has a slope of -3/4

Write an equation in Ax+By=C form for this line.
Use integers for A, B, and C.

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image