Solve 3x+4x= totally not free pointz

Aright triangle has an area of 18 square inches. b: if the triangle is not an isosceles triangle, what are all the possible lengths of the legs, if the lengths are whole numbers. answer !

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)