Name That Function
What do we call a function of the form:
2x^2+4x-9
What is a polynomial function?
The domain for the function:
f(x)=4x^3-10x^2-8x+7
What is all real numbers?
The set of all numbers that are possible for y for a given function.
What is the range?
Find f(0) if
f(x)=(x^2-4)/(x-8)
What is
1/2
The point where a function crosses the y-axis.
What is the y-intercept?
What do we call a function of the form:
g(x)=(x^3+x)/(x-7
What is a rational function?
The domain for the function:
T(x) = 8
What is all real numbers?
Functions that have the sum or difference of any number of terms which have variables that are raised to only whole number exponents.
What are polynomial functions?
What is the value of t(-3) for the function:
t(x)=12
What is 12?
The y-intercept for the function
g(x)=-5x^2+6x-2
What is the point (0, -2)?
What do we call a function of the form:
T(x)=sqrt(2x-18)
What is a radical function?
The domain for the function:
h(x)=(x+5)/(x-8)
What is all real numbers except x = 8?
The points where a function crosses the x=axis.
What are called x-intercepts?
f(-3) for the function
f(x)=(x-2)/(x^2+16)
What is
y=-1/5
The x-intercept(s) for the function . . .
T(x)=x^2+8x+15
What are the points (-3,0) and (-5,0)?
What do we call a function of the form:
f(x)=5
What is a constant function?
The domain for the function:
R(x)=sqrt(x+5)
What is all real numbers greater than -5?
[-5,oo)
Functions that look like a fraction with a polynomial in the numerator and a polynomial in the denominator.
What are called rational functions?
Find the value of the function at x= 6 . . .
g(x)=-2x^2-4x-5
What is y= -101?
The y-intercept for the function . . .
h(x)=(2x+6)/(x-3)
What is the point (0,-2)?
What do we call a function of the form:
N(x)=120*e^(-0.04x)
What is an exponential function?
The domain for the function:
R(x)=(x-2)/(x^2-25)
What is all real numbers except 5 and -5?
How do we reply if x = -5 is evaluated in the function
f(x)=sqrt(x-3)
What is to say that the functions is undefined at x = -5?
Can we evaluate the function at x = -2? And, why?
P(x)=(x-2)/((x+2)(x-3))
What is no, it is not in the domain of the function? or, What is, no, the function is undefined at x = -2?
The x-intercept(s) for the function . . .
R(x)=(x-3)/(x^2+7x+10)
What is the point (3,0)?