I dont understand this please help me

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1

Y+ 2/y is it a polynomial in one variable or not? and if so, why?