On graph paper, graph the parabola $y = 2x^2 − x − 15$.  

1. What are the roots ($x$-intercepts) of the parabola? Write your points in $(x, y)$ form.

   Hint (a):

   Look at the graph above to help you write your points in $(x, y)$ form.

2. How would the graph of $y = −(2x^2 − x − 15)$ be the same or different? Can you tell without graphing?

   More Help (b):

   What does multiplying $−1$ into an equation do to the graph?
   Think, how is $y = x$ different from $y = −x$.