How can you show two objects are proportional with a table, graph, and a equation?

Find an equation for the linear function which has slope -10 and x-intercept -7

Find the roots of the equation below. x^2 - 6 + 9 = 0

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old