Is the relation a function?
(1,4), (2,6), (3,-1), (5,-1), (7,-1)
Yes
Each x-value has exactly one y-value
Is the relation a function?
(0,-2), (-2,0), (1,8), (3,2), (-2,-1)
No
When x is equal to -2, there are two different y-values
Give the Domain of the relation:
(1,4), (2,6), (3,-1), (5,-1), (7,-1)
D: {1,2,3,5,7}
Give the Range of the relation:
(0,-2), (-2,0), (1,8), (3,2), (-2,-1)
R: {-2,-1,0,2, 8}
The vertical line test is used to determine if a relation is what?
A function or not
Continuous or Discrete?
The temperature of the oven being preheated to cook brownies
Continuous
Continuous or Discrete?
The number of fish at different ocean depths
Discrete
Write in function notation:
The babysitter charges $8 per hour.
f(x) = 8x
Write in function notation:
The number of pizzas needed is equal to the number of people divided by 4.
f(x) = x/4
Write in function notation:
The cost to be a gaming club member is $35 for joining and $20 per month.
f(x) = 35 + 20x
Write in function notation:
She hiked 17 miles each day of her trip.
f(x) = 17x
For f(x) = 3x - 2, find f(5)
f(5) = 13
For f(x) = x/4, find f(100)
f(100) = 25
For f(x) = -2x + 7, find f(10)
f(10) = -13
For f(x) = 2.5x + 3, find f(6)
f(6) = 18
For f(x) = -5x - 7, find f(4)
f(4) = -27
For f(x) = -5x - 7, find f(-1)
f(-1) = -2
For f(x) = -2x + 7, find f(1)
f(1) = 5
For f(x) = 3x - 2, find f(-4)
f(-4) = -14
Find the Range for the given Domain:
f(x) = 10x + 1 D: {-1, 0, 1}
R: {-9, 1, 11}
Find the Range for the given Domain:
f(x) = -5x - 2 D: {-2, 0, 2}
R: {8, -2, -12}
Find the Range for the given Domain:
g(x) = x/2 + 1 D: {-4, 0, 8}
R: {-1, 1, 5}