What is the slope and y intercept for 5b]-5c]-2d]1

Twenty-five percent of the customers entering a grocery store between 5 p. m. and 7 p. m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

What function has a range {yly< 5}? question on picture above^