6. Consider the function \( y = p ( x ) \) shown in the graph. (2 points each)
a. Find \( p ( 0 ) \) . Write the answer in function notation.
What key feature of the graph is this?
b. Solve \( p ( x ) = 1 \) . Write answer in solution set notation.
c. Solve \( p ( x ) \geq 1 \) . Write answer in set-builder notation.
d. Write the domain of \( p ( x ) \) in interval notation. Write the range of \( p ( x ) \) in interval notation.