Domain/Range
All possible X values
Domain
430
1
5
Is this a function?
Yes
5x-4 = 4+5x
No solution
What does open vs closed circle mean
Open < >
Closed is equal to
(x3)2
x6
Solve f(-1): 4x+2
-2
What are the x-intercepts?

(-3,0) (2,0)
7(x+1) = 7x+7
Infinite solutions
What is the domain?
-3 to 2
x5y4 / x2y
x3y3
Solve f(4): 3x+x-1
15
What are the x and y intercepts?
x intercepts: (-1, 0) (3, 0)
y intercepts: (0, -3)
1+2x-x = x-5+x
x=6
What is the range?
-5 to 2
(5x2y3)(12x2y3)
60x4y6
Solve f(5): 3x2+2x+2
87
Find f(-3)
-8
6x-3-(x+2) = 4x+5
x=10
What is the domain and range?
Domain: all real numbers
Range: -4 is less than y which is less than or equal to infinity
(2a-4b3)(3a-3b-2)
6a-7b
68
Find f(-2)
2 and -4
3(6x+4) = -7(-x-8)
x=4