Which number is the slope or y-intercept?
Calculate Slope
Scale factor
Similarity
Diltions
100
Which is the slope?
y = 2x + 10
2
100
(5, 7) and (3, 6)
What is 1/2?
100
If a model airplane has a scale factor of 1/100, how many times larger is the actual airplane than the model?
100 times
100
Two triangles are similar and congruent when they share what in common?
Angles and quotients
100
A point is located at (3, 6). Find the coordinates of the dilated point if the center of dilation is the origin and the scale factor is 2.
6,12 (Work: (3x2, 6x2)
200
Which number is the y-intercept?
y = 3x + 21
21
200
(2, 5) and (8, 1)
What is -2/3?
200
A photo that is $4$ inches wide is enlarged to be $12$ inches wide. What is the scale factor of the enlargement?
3 or 3/1
200
Congruent triangles are a dilation of one another? True or false?
False
200
The coordinates of a triangle's vertex are (-4, 10). What are the new coordinates after a dilation with a scale factor of 1/2 centered at the origin?
(-2,5) (-4x1/2, 10x1/2)
300
Which number is the slope?
y = 4x + 20
4
300
y = -3x - 2
What is -3?
300
If the scale factor between two similar triangles is $5$, the ratio of their areas is this number.
25 or 52
300
Similar triangles have been dilated? True or false
True
300
A segment AB has a length of 15 cm. If it is dilated by a scale factor of 1/3, what is the length of the new segment A'B'?
5cm (Work: 15x 1/3)
400
Put into y=mx + b form first.
Then identify the slope.
4x + y = 8
-4
400
4x + y = 7
What is -4?
400
A map uses a scale of 1 inch to 5 miles. If the distance between two towns on the map is 3.5 inches, what is the actual distance in miles?
17.5 miles
400
Are these shapes similar or congruent?
Similar
400
A trapezoid is dilated with a scale factor of 5. If one of its sides was 6 units long, what is the length of the corresponding side on the dilated trapezoid?
30 units (Work: 6x5)
500
What is the slope?
y = 1/2x + 2
1/2
500
-6x + 3y = 9
What is 2?
500
If a pentagon is scaled by a factor of 0.5, and its original perimeter was 30 cm, what is the new perimeter?
15 cm
500
If two similar rectangles have a ratio of corresponding sides of 2:5, and the smaller rectangle has a perimeter of 20 units, what is the perimeter of the larger rectangle?
50
500
A point $P$ is at (-9, -3). Find the coordinates of P'\ after a dilation centered at the origin with a scale factor of 4/3
(-12,-4) Work: -9 x4/3, -3x4/3