5a - 2 > 10 Can u do step by step and also show how you know that you found the correct a value

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?

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