Can you read my messages here?
Great.
For example, f (x) = 2x - 1
That is the original function
If we solve f (3) = 2 * 3 - 1
f (3) = 5
Perfect, Appreciate it.
Oh, that is a totally different case. :=)
Let me download the picture, please.
As you can see, this function is a parabola, and its vertex is (1,7)
For f (x) = 3, we have two values:
On the left, (-1, 3) and on the right, (3, 3).
In consequence,
x = -1 and 3, for f(x) = 3
Two solutions, EK.
Like you prefer. The important piece of information here is that x has two values for f (x) = 3.
Is it clear now?
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