Can someone help? i am pretty stuck here

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

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

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2