Ireally need this answer, it’s to with my college placement test?

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

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)