Review for EFHS Flashcards
To review in class
Draw the Mapping Diagram of these points and tell me if it is a function. Why or why not?
{(1 , 3), (1 , 0), (1 , -2), (1 , 8)}
No, the x value is paired with multiple y values.
What is the name of this parent function? Give an example function.
A Cubic Function;
f(x) = x^3 + 3
Is this mapping diagram a function? Why or why not?
Yes, each x value is only paired with one y value.
When f(x) = 3x + 10, find f(x) when x = -2 and x = 3.
f(x) = 4 when x = -2 f(x) = 19 when x = 3
When f(x) = x^2 + 6, find f(x) when x = 4 and x = -4.
f(x) = 22 when x = 4 and when x = -4
What is the name of this parent function? Give an example function.
A Linear Function
f(x) = x + 2
Draw the Mapping Diagram of these points and tell me if it is a function. Why or why not?
{(-1 , 0), (3 , 2), (4 , 7)}
Yes, each x value is only paired with one y value.
Draw a Quadratic Function and give any example function with it.
f(x) = x^2 - 1
When f(x) = 1/2*(x) + 2, find f(x) when x = 6 and x = 10.
f(x) = 5 when x = 6 f(x) = 7 when x = 10
Is this mapping diagram a function? Why or why not?
Yes, each x value is only paired with on y value.
When f(x) = 2x^2 - 1, find f(x) when x = -1, x = 0, and x = 3.
f(x) = 1 when x = -1 f(x) = -1 when x = 0 f(x) = 17 when x = 3
Graph the function f(x) = 2x - 3 and tell me its parent function.
Linear
Graph the function f(x) = x^3 + 4 and tell me its parent function.
Cubic
Draw the Mapping Diagram of these points and tell me if it is a function. Why or why not?
{(-5 , -3), (-3 , 0), (0 , 1), (0 , 3)}
No, because when x = 0, it has multiple y values.
When f(x) = -x + 4, find f(x) when x = -2 and x = 3.
f(x) = 6 when x = -2 f(x) = 1 when x = 3
Is this mapping diagram a function? Why or why not?
Yes, because each x value is only paired with one y value.
What is the name of this parent function and give an example function of it.
Square Root
When f(x) = x^3 - 1, find f(x) when x = -1, x = 2, and x = 3.
f(x) = -2 when x = -1 f(x) = 7 when x = 2 f(x) = 26 when x = 3
Draw the function f(x) = 2 and tell me what its parent function is called.
Constant
Graph these points and tell me what its parent function is:
{(0 , 0), (1 , 4), (4 , 6), (9 , 6), (16 , 8)}
Square Root
