Question is in the pic

Find the x coordinate of the point.

What term best describes a line and a point that lie in the same plane? a. congruent b. coplanar c. collinear d. equal

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).