Evaluate the difference quotient for the given function. Simplify your answer. f(x) = f(2) X-2 f(x) = x + 4 x + 1'

Find f(1) and f(2). f(x)=x+7

Use the Vertical Line Test to determine whether the graph represents y as a function of x.

During a nine-hour snowstorm, it snows at a rate of 1 inch per hour for the first 2 hours, at a rate of 2 inches per hour for the next 6 hours, and at a rate of 0.5 inch per hour for the final hour. Write and graph a piecewise-defined function that gives the depth of the snow during the snowstorm. How many inches of snow accumulated from the storm?