Parallel and Perpendicular
Equations of Circles
Transformations
Throwback: Statistics!
Angles
100
What is the slope of the line represented by this equation:
y = 10x - 12
10
100
What is the center of this circle:
100 = (x - 9)2 + (y + 2)2
(9, -2)
100
What is the name of this transformation?
Double points if you can describe it precisely! 
Translation;
8 units to the right and 4 units up.
100
How do you calculate the mean of a data set?
Add up all the values and divide by the number of data values.
100
Name a pair of angles that is ALWAYS congruent.
Vertical angles, right angles, etc.
200
What is the slope of the line represented by this equation:
y = -3 + 1/2x
1/2
200
What is the center of this circle:
36= x2 + (y + 20)2
(0, -20)
200
What is the name of this transformation?
Double points if you can describe it precisely!
Dilation.
Precise description: dilation with a scale factor of 2.
200
Can you have more than one mode? If not, how do you decide what it is?
Yes
200
What is a pair of angles that is congruent ONLY when lines are parallel?
Alternate Interior, Alt. Exterior, Corresponding
300
How can you tell two lines are parallel?
Same slope and different y - intercept
300
What is the radius of this circle:
100 = (x - 9)2 + (y + 2)2
10
300
What is the name of this transformation? Describe it correctly
Reflection over the y - axis.
300
Can you have more than one median? If not, how do you decide what it is?
No. If there are two middle numbers, take the mean of them to find the median.
300
What is it called when angles add up to 90 degrees?
Complementary
400
Identify the two lines that are parallel:
A) -4 + 2x = y
B) y = -1/2x + 4
C) y = -2x + 1-
D) y = 8 + 2x
A and D
400
Write the equation of a circle with a center of (5, 0) and a radius of 3.
(x - 5)2 + y2 = 9
or
9 = (x - 5)2 + y2
400
What is the name of this transformation? Describe it correctly for bonus double points!
Rotation
Precise description: 90o CW rotation about the origin
400
What is the median of this data?
85
400
What is it called when angles are next to each other?
Adjacent
500
Identify two perpendicular lines:
A) -4 + 2x = y
B) y = -1/2x + 4
C) y = -2x + 1-
D) y = 8 + 2x
A and B
500
What's the difference between a circle and an ellipse?
Circles have a constant distance between the center and the circumference (constant radius) but ellipses can have different distances between the center and the circumference.
500
What is the name of this transformation? Describe it correctly for bonus double points!
Reflection
Precise Description: Reflection over the line y = x + 2
500
What is the IQR of this data? 
115 - 65 = 50