Please help me due tonight

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

If the discriminant if a quadratic equation is 4 which statement describes the roots?