Graphs
This test is used to prove function o not a function
Vertical Line Test
Is the name of the variable that cannot repeat
X or Input, Domain
In the ordered pair (3,7), which number represents the x-coordinate?
WHAT IS 3
Regarding a table, what is a Relation?
The relationship between sets of values.
Rewrite the equation 7x + y/4= 5 so that y is a function of x.
The equation y= 20 - 28x represents y as a function of x.
The number of times Vertical Line test can intersect the line in the Graph.
Only Once.
The relationship that represents Y as a function of X is
Each value of X is associated with only one value of Y
In the ordered pair (2,5), which number represents the y-coordinate?
WHAT IS 5
What is the difference between a relation and a function?
A relation can have many outputs, but a function can have only one outpu
Luis is going on a trip. The Uber charges 5 dollars for pick-up and .65 cents for each additional 0.1 mile. Which equation best represents the cost y for the ride, if the trip was x tenths of a mile?
0.65x + 5
We use it to graph functions.
Plotting Points
My input -2 has arrows pointing to 3 and 5
Not a Function
What coordinate plane point must one always begin at when plotting an ordered pair?
WHAT IS THE ORGIN
Complete the table using the function y=7x.
{(1,7), (2,14), (3,21), (4,??)}
Answer 28
The total amount A spends over the groceries on C weeks includes $28 in the first registration fee and $13 each week for extra grocery. What equation describes the relationship between A and C?
28+ 13C
When the slope line crosses the Y-axis
if my output is 8, 5,3 and my input is 1,2,3,4
Function
What should you do first when plotting the ordered pair (7,3), starting at the origin?
WHAT IS COUNT 7 UNITS OVER TO THE RIGHT
Write an equation for this table.
{(X,Y), (2,1), (3,2)(4,3), (5,4)}
Answer Y=X-1
A concert is taking place in town and everyone is ready to attend. The ticket for people without seatings costs $154. While the tickets with seatings cost $145 extra. What is the equation that represents the total fee if y that the concert will charge if x people buy tickets with seatings?
154+ 145x
The equation for a linear function
Y=mx+b
Is the perfect real-life example of a mapping that is a function.
Vending Machine.
Ending position (6,7). I moved 2 spaces to the right and 4 spaces up. Starting position (?,?)
WHAT IS (4,3)
Describe an input and output table.
An input-output table is a table that shows how a value changes according to a rule.
Javier is having a birthday party and decided to rent Carnitas Queretaro to host it there. Carnitas Queretaro requires an initial payment of $798 plus $23 per person attending to the birthday party. Which equation will best describe the total fee y that Carnitas Queretaro will charge if x people attend to the celebration?
23x + 798