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1 Answer
- ?Lv 57 years ago
NO!
There are two ways to describe a function/graph... y=mx+b is what you're used to seeing. The other method is function notation.
f(x)=mx+b which is read as function f of x is equal to...
So when they say y=f(x) they are telling you to graph the function using x as the independent variable and f(x) to be the dependent variable, otherwise know as y.
x inside the vertical lines means the absolute value of x, it's distance from 0 or it's magnitude without considering the sign. If x>0, |x|=x. If x<0, |x|=-x.
The absolute value of 5 is 5. The absolute value of -5 is also 5. It's 5 units from zero on a number line whether it's to the left or the right.
