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Earn +20 ptsQ: What is it called when a value is substituted for x?
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What does function of x mean?
A function of x means that the answers depends on the value of x that is substituted into the function. For example: y = x + 1 If x = 1, y = 2 If x = 2, y = 3 and so on.
If f of x equals 3x - 10 then what is f of 2a?
if f(x) = 3x - 10, then whatever is put (substituted) for x in the "f(x)" bit is substituted for x in the "3x - 10" bit. Thus f(2a) = 3(2a) - 10 = 6a - 10.
What are expressions that have the same value no matter what x represents called?
algebraic expressions
What does the x in f x mean?
It is the input value to the function called "f(x)" If f(x)= x + 1, an input value of 2 ( x equals 2) would give us 2 + 1, or 3.
How do you identify if the given equation is function or not?
A function is an equation (a relation) which has only one y-value for every x-value. If a single x-value has more than one y-value, the equation is no longer called a function.
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