SOLUTION: Please help me with this function question a) Use the graph to find the x interval(s) on which the function is positive. b) Use the graph to find the x interval(s) on which t

Question 29562: Please help me with this function question
a) Use the graph to find the x interval(s) on which the function is positive.
b) Use the graph to find the x interval(s) on which the function is negative.
I only have the graph but not sure how to find the x interval. What does it mean by positive and negative?
Answer by bmauger(101) (Show Source): You can put this solution on YOUR website!
The function of x is the y value. What the question is asking is what is the interval(s) when the function is positive, which means what are the x values when y>0. If our graph looked like this...

...we would say the interval for which x is positive is OR (look at the x axis if this is confusing)
and the interval for which x is negative would then be: which is read as -5 is less than x which is less than 2.
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