Vocabulary
Define domain.
What is the x-values or input values of a function?
Find the domain and range. {(-3,2),(-2,4),(-1,2),(5,4)}
D:{-3,-2,-1,5} R:{2,4}
Is the following relation a function? {(-3,2),(-2,4),(-1,2),(5,4)}
What is yes?
If x=5 evaluate y=x+3.
What is y=8?
Midpoint Formula.
What is (Average the x values, average the y values)?
Define Range
What is the y-values or output values of a function?
Find the domain and range. {(-1,5),(2,3),(4,2),(10,2)}
D:{-1,2,4,10} R:{2,3,5}
Is the following relation a function? {(-1,5),(2,3),(4,2),(10,2)}
What is yes?
If x=3 evaluate y=2x.
What is y=6?
Midpoint of (2, -3) and (8, 8)
What is (5, 2.5)
Define vertical line test.
What is used to determine a function on a graph?
Draw vertical lines on a graph. If the vertical line hits graph more than once, then it is not a function.
Name at least two other names for domain.
What are x-values, inputs, independent variable?
Is the following relation a function? {(-1,5),(2,3),(4,2),(-1,2)}
What is no?
If x=-1 evaluate y=5x2+3.
What is y=8?
The distance from (4,5) to (5, -2) to the nearest 10th.
What is 9.9?
Define function.
Each input has exactly one output.
The natural domain for f(x)= x2
What is all Real numbers?
Is the following relation a function?
x y
3 4
4 4
5 4
6 4
What is yes.
If x=-4 evaluate f(x)=|x|+3.
What is f(-4)=7?
Find the slope between (5,8) and (-4, 1)
What is 7/9?
The quadratic formula.
The opposite of b +- the square root of b2-4ac
all divided by 2a.
The natural domain for f(x)= 1/(4-x)
What is all reals except 4.
Is x=y2 a function if x= domain, and y=range?
What is no?
Given f(x)=3x2 + 4x + 1, evaluate f(3).
What is f(3)=58?
The equation of a line between (5, -6) and (-3,2)
What is y=-1x-1?