1
What is the equations for plugging in coordinates to find slope?
y2-y1/x2-x1
Are you excited to take this unit test?
Yes, I am so excited.
Do dilations change the angle measurement?
No
Dilations of a triangle make the new triangle congruent or similar?
Similar
If I tell you to scale factor a shape by 3, is it getting smaller or bigger?
Bigger
If my run is 2 and my rise is 6, what is my slope?
3
Is a slope of 8/4 and 2 the same?
Yes, 4 goes into 8 twice
Name 3 different types of transformations.
Rotate, translate, reflect
If I tell you to dilate a shape with a scale factor of 1/3 is is getting smaller or bigger?
Smaller
If I have a graph with a slope line on it and now slope or coordinates are given, how can I find the slope?
Draw or explain.
Pick a point and go over and up to the next point. Must be where lines meet.
I can find if two shapes are similar by using scale factor/multiples
Yes
Do dilations take perpendicular lines to perpendicular lines?
Yes
Coordinates (4,6) and (7, 9) are given. Find the slope.
3/3=1
If a dilation of a shape tells me that the center is at A on that shape, does point A move in the dilation?
No
If my slope coordinates are (2,3) (a,6), and (6,9)
What is a?
4
If my slope coordinates are (0, 2) (4, 6) what is my slope?
4/4=1
What is a slope with a 0 on top called?
Undefined
What is a slope with a 0 on the bottom called?
0
If I have a 6 by 7 square what is its new number when I scale factor by 1/2 and by 3?
3, 3.5
18, 21
Similar Triangle Drawing. Mrs. K will show you.
A=6
B=22.5
Graph with slope drawing. Mrs. K will show you
What is another point that could lie on this slope and what is the slope?
3/2 (8,5) answers may vary
If the slope of a line is 5/3, is 15/9 on the same line?
yes x3
Are coordinates (3, 6) (6, 12) and (9, 16) all on the same slope line? If not which one doesn't belong?
No, (9, 16)
Solve algebraically
2/4x=12
X=24