Slope
What is the slope formula?
y2-y1/x2-x1
Name two different types of transformations
Reflections, rotations, translations, dilations
Does a shape maintain congruence when it is dilated?
No
What is the median of the following data set?
2,4,4,6,7,8,9
6
How do we find the mean absolute deviation?
Subtract each data set from the mean and find the average of the distances
What is the slope of the equations
y=3x+4?
3
What transformation slides a figure?
Translation
What are the two types of dilations
Enlargement, and reduction
What is the mode of the following data set?
10,24,15,27,37,24,15,37,24,30
24
What is the mean absolute deviation of the following data set if the mean is 14?
10,12,14,16,8,24
4
What is the slope of a line that goes through the points (4,1) and (1,4)?
-1
What transformations maintain congruence?
Rotation, reflection, translation
What is the scale factor of the dilation if the length of shape A is 4 and length of A' is 16?
4
What is the median of the following data set?
10,15,20,16,30,14,10,13
16
What is the mean absolute deviation of the following data set if the mean is 15?
14, 16, 15
2/3
-2
Reflection on the x-axis
Triangle ABC is 10ft long with a 6 ft base. What is the length of Triangle A'B'C' after it is dilated by a scale factor of 3?
30
What is the range of the following data set?
10,14,12,15,17,18,9,24,20
15
What is the mean absolute deviation of the following data set?
10,15,13,18,12,22,20,16,22,12
3.6
What is the slope of a line that crosses the x-axis at -3 and the y-axis at 2?
2/3
What is the new coordinates of point (7,2) when it is translated 3 units to the left?
(4,2)
Rectangle ABCD has a height of 5 and a width of 7. It is dilated by a scale factor of 2. What is the area of the new rectangle?
140
What is the median of the following data set?
10,15,20,10,13,14,
13.5
What is the mean absolute deviation of the following data set?
5,4,7,10,13,20,12,19
4.75