PLEASE HELP

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Prove that quadrilateral is a rhombus.

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.