how do u do these word problems?
a) a parabola that has its vertex on the line y=3x+1 and whose equation is of the form y=3(x-h)^2 + k passes through the point (1,10) . what are the equations of all such parabolas?
b) square ABCD is inscribed in square EFGH forming four congruent right triangles ( the inner square is kinda of crooked inside the larger square).
if the perimeter of the square EFGH is 64 and the area of square ABCD is 130, determine the values of x and y.
c) a rectangle is cut to form a square. the perimeter of the rectangle is 54 cm, and the area of the cut-off piece is 36 cm sq. what are the dimensions of the original rectangle?