Slope and y-INTERCEPT of the line through the points (4, -8) and (0, -2)

Which graph represents the following piecewise defined function?

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4