Function/ Not Functions
Solving for "y"
Intercepts
Miscellaneous
100
Is the following equation a function?
y = x2 +3
Yes this is a function!
100
What is the equation for slope-intercept form?
y = mx + b
100
Looking at the following ordered pair, what are the x intercept and y intercepts?
(5,0) and (0,3)
x-intercept: 5
y-intercept: 3
100
What Ms. Kalin's dog's name?
Bones!
200
Why is the following not a function? 
The input, 0, has multiple outputs, -2 and 1.
200
Solve for y in
2x + y = 8
y = 8 - 2x
200
Find the y-intercept in the following equation:
y = -3 + 2x
(0, -3)
200
Is the following a function?
Yes!
300
What are two ways we can tell if an equation is a function?
1) The graph passes the vertical line test.
2) The x-values map to only one y-value.
300
Solve for y:
6x - 2y = 12
y = -6 + 3x
300
Solve for the x and y intercepts:
2x + 3y = 30
x intercept: (15, 0)
y intercept: (0, 10)
300
Solve for y:
-2x + 6y = 18
y = 3 + 1/3x
400
Does the following mapping represent a function?
Yes, since the x's only map to one y each.
400
What is the mistake in the following steps?
1) 2y + 3x = 12
2) 2y = 12 + 3x
3) y = 6 + 3/2x
From step 1 to step 2, 3x should have been subtracted from both sides. Instead, it was added.
400
What are the intercepts from the following equation?
y = 7
x intercept: none
y intercept: 7
400
What is the y intercept for the following equation:
6x = 18
None! This equation is x = 3 and will never cross the y-axis.
500
Does this graph represent a function? 
No, it fails the vertical line test.
500
What is the equation for standard form of a linear equation?
Ax + By = C
500
Robert deposits $600 into a savings account. Every month, the account gains 0.05% interest. What is the y intercept in this scenario?
(0, 600) since that is when our x (number of months) will be equal to 0. It is the initial amount!
500
Sarah goes to a carnival. Each carnival ride costs $1.50 each. She pays $3 total for parking.
What is the y intercept in this scenario?
(0, 6) since the equation is
y = 1.5x + 3.