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If you are speaking of an entity which has a graph on the xy plane that is of the form
y = f(x)
then it IS NOT a function.
An equation which defines a relation on the xy plane is the equation of a
function, if and only if it has a graph that is not crossed more than once by
a vertical line. However the graph of x=2 is indeed a vertical line in the xy
plane consequently IT IS NOT A FUNCTION.
In most algebra and precalculus courses, the concept of function is assumed
to refer to a function y=f(x). However if we were to think in the reverse direction
where y was an independent variable and x were the dependent variable, then
we could assert that it is a function x=f(y) = 2 which is now a constant.
For most basic courses in mathematics however, your answer is NO, it is not a function.
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Is y equals -x plus 2 a linear function?
Yes, y=-2+x is a linear function.
Is y equals x2 a function?
Y=X^2 is a function for it forms a parabola on a graph.
Which function has the following a vertical asymptote at x equals -4 horizontal asymptote at y equals 0 and a removable discontinuity at x equals 1?
2x-2/x^2+3x-4
Does the graph x-y2 equals 1 represent x as a function of y?
X - Y^2 = 1 - Y^2 = - X + 1 Y^2 = X - 1 Y = (+/-) sqrt(X - 1) now, X is represented as a function of Y. Function values are generally Y values.
What is the inverse function of f fx equals sqrt2x-1?
3
Is y equals -x plus 2 a linear function?
Yes, y=-2+x is a linear function.
What is the average rate of change from x equals 2 to x equals 3 for the function f of x equals 3 ln x?
It is 1.2164
Is it true or false that the limit of a function f x at x equals 2 is always the value of the function at x equals 2 that is f 2?
False. It is true for a function that is continuous at x=2, but it is not generally true for all functions. For a counterexample, consider the function f(x), such that: f(x)=x for x not equal to 2 f(x)=0 for x=2 The limit of this function as x approaches 2 is 2 (since we can make f(x) as close to 2 as we want as x gets closer to 2), but f(2) does not equal the limit of f(x) as x approaches 2.
What is the formula for a rational function with x intercepts at x equals 3 and x equals negative 2. y intercept at y equals 12. a hole at x equals 1 and no horizontal asymptote?
f(x) = 2*(x-3)*(x+2)/(x-1) for x ≠1
How would you rewrite x plus y equals -2 in a function form?
y = -x-2
Does y vary directly as x in this function y equals x plus 2?
No.
What is another name for the root of a function?
The "root" of a function is also called the "zero" of a function. This is where the function equals zero. The function y=4-x2 has roots at x=2 and x=-2 The function y=4-x2 has zeroes at x=2 and x=-2 Those are equivalent statements.
How do you write x plus y equals -2 in function form?
x + y = -2 y = -x - 2 f(x)= - x -2
Is y equals x2 a function?
Y=X^2 is a function for it forms a parabola on a graph.
What is the period of the function y equals 2sin x?
2 pi
Which function has the following a vertical asymptote at x equals -4 horizontal asymptote at y equals 0 and a removable discontinuity at x equals 1?
2x-2/x^2+3x-4
What is the rule for the function x equals 0 1 2 3 4 y equals 8 6 4 2 0?
y = 8 - 2*x
