The equation Y+6 = 1/3 (x-9) is written in point-slope form. What is the equation written in slope-intercept form?

y=1 /3 x-3
y = 1/3 x+9
y = 1/3 x - 9
y - 1 /3 x+3

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