Question 1026753
answer to number 1.


y = 180 / ((x+5) * (x-4))


the denominator is equal to 0 when x = -5 or x = 4.


when x = 0, the equation becomes 180 / (5 * -4) which is equal to 180 / -20 which is equal to -9.


here's the graph.


<img src="http://theo.x10hosting.com/2016/032702.jpg" alt="$$$" </>