Normally the domain refers to which type of variable?
a. dependant (y) b. independent (x)
What is B.
The independent x variable
300
True or False:
greater than or equal to
and less than or equal to
use brackets for interval notation
What is True.
300
Graph the inequality all real numbers from - 23 to -4 , including - 23 but not including -4
lets see the graphs
300
Given the relation A = {(5,2), (7,4), (9,10), (x, 5)}. Which of the following values for x will make relation A a function?
What is any number besides, 5,7,9
300
f(x)=4x^2+7 and g(X)=5x.
What is f(x)g(x)
What is 20X^3+35x
400
Alex states that the relation below is not a function. Lillian says that it is a function. Who is correct? Explain your reasoning.
{ (13,14), (12,5) , (16,7), (13, 14), (-2, 33), (13, 14) }
Who is Lillian. It is a function. This is tricky, although x's are repeated they go to the same y value
400
Write the Interval (-5, 17] as an inequality
-5
400
graph on the number all real numbers between 1 and 10, not including 1 or 10
Write as an interval
Lets see the graphs
1
400
Is the relation depicted in the chart below a function?
X 0 1 3 5 3 9
Y 8 9 10 6 10 7
What is Yes
400
if f(x)=11x and g(x)=1+x. What is f(g(x))
What is f(g(x))=11+x
500
For the following relation to be a function, X cannot be what values? { (8, 11), (34,5), (6,17), (X ,22) }
What is 8,34,or 6.
500
Write x=/-7
x does not equal -7 in interval notation
(-infinity, -7)(-7, infinity)
500
Graph on the number line x =/5
x does not equal 5
Write this in interval notation
Lets see the graphs
(-infinity,5)(5,infinity)
500
X -2 -1 0 1 2 3
Y 5 5 5 5 5 5
What is Yes. It is still 1:1. Each x has a specific y coordinate
Bonus this graph is a horizontal or linear line?