Question

Please help me with this problem. I have tried many times and have gotten it wrong. I need help especially on the last part. Can I also have a good explanation because I want to know how to do problems like this in the future. Also please answer at least the bottom two parts.

Answer 1

1) The domain is all the possible x values in the function so it would be [-4,4]

2) There are only 3 zeros shown on the graph and they are (-2, 0) (0, 0) (2, 0) the zeros are the value of x when y = 0.

3)The function is positive/Negative is asking for what x values make the y values positive aka interval notation. The function is positive if x = (0, 2) because 0 and 2 aren't included you use parentheses () instead of brackets []  

The function is negative if x [-4, -2), (-2,0), (2,4]