See where the graph is above the x-axis.
For this question I am supposed to graph the function and determine the interval(s) (if any) on the real axis for which f(x) is greater than or equal to 0. My question is this: f(x) = x^2 - 4x
Can you help me with it?
Thank you for your time,
starrynight
Hello starrynightLook at where the graph of crosses the -axis: and . These two points divide the -axis into 3 intervals:
The question asks you for the interval(s) for which . In other words, in which of the three intervals above is the graph of on or above the -axis.
So, which one(s) is it?
Grandad