Consider the table, equation, and graph. Which of them represents a proportional relationship?

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).

What is the result of adding the system of equations? 2x+y=4 3x-y=6

What is the slope of the line that contains the points (-2,1) and (0,-3)