Vocabulary
Slope-intercept form
Solving for values
Function or not?
100
What is the definition of domain?
A set of input values (all values of x).
100
What is the slope in the function
y = 3x + 2
slope: 3
100
What must be the value of y if x is 2 in the given function y=x-1
1
100
Is it a function? Justify your answer.
{(2, 3), (4, 5), ( -2, 6)}
Yes, each input has exactly one output.
200
What is the definition of range?
The set of output values (all values of y).
200
Identify the y-intercept in the function
y = 3x
0
200
State the domain and range: 
D: {1, 2, 3, 4, 5, 6} R: {-1, 0, 1, 2, 3, 6}
200
Using the vertical line test, does the graph of the points (1,3) and (1,5) represent a function?
No, the points fail the Vertical Line Test.
300
What is the definition of a function?
A relationship between input and output values. Each input has exactly one output value.
300
What is the slope in the function
-4x + 8y = -12
slope: 1/2
300
What is the value of x when y is 1 in the function
y=x+1
0
300
Is it a function? Justify your answer.
| x | y |
| 2 | 4 |
| 1 | 5 |
| 2 | 6 |
No, the input of 2 has two different outputs.
400
How can we tell if the given mapping diagram is a function or not?
If it is a one-to-one or many-to-one relation.
400
What is the x-intercept in the function:
-2y=4x+5
-5/4
400
What is the value of y when x is -3 in the function
2x-3y=6
-4
400
Is it a function? Justify your answer.
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Yes, it passes the Vertical Line Test.
500
What is the test to tell if a graph is a function?
Vertical Line Test
500
What should be the x-intercept if the function has a slope of -3 with y-intercept equivalent to 4?
4/3
500
In the function -8x+y-5=0, what must be the value of x when y is -3?
-1
500
Is it a function? Justify your answer.
Yes, each input has exactly one output.