Average rate of change

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

Which of the following expressions is equal to 2x^2+8