Plotting Points
What are the coordinates at the origin?
(0,0)
If coordinate P (2,1) is translated 3 units up, what is the coordinates of P'?
(2,4)
If coordinate C (9,1) is reflected over the x axis, what are the coordinates of C'?
(9, -1)
What is the word for the lines drawn on a coordinate plane?
axes
True or False: A dilation does not produce a congruent image.
True - A dilation's image is not congruent to its pre-image because it does not preserve the size of the shape.
Which direction do you move on the x axis?
Across (left to right)
If coordinate X (3,5) is translated 2 units down, what are the coordinates of X'?
(3,3)
If coordinate I (8, 7) is reflected over the y axis, what are the coordinates of I'?
(-8, 7)
What is the word for moving a shape without changing its size, shape, or orientation?
translation
What is the new image of G(8, 10) if it undergoes a dilation by a factor of 2?
G'(16, 20)
Which quadrant would the point (3, 1) lie in?
Quadrant I
If coordinate G (-1, -5) is translated 2 units right and 4 units up, what are the coordinates of G'?
(1, -1)
If coordinate U (0,9) is reflected over the x axis, what are the coordinates of U'?
(0, -9)
What is the word for flipping a shape over an axis?
Reflection
What is the scaling factor if point A(-2, 3) dilates to point A'(-1, 1.5)?
k = .5 or 1/2
What is the quadrant in which (-2, -3) lies?
Quadrant III
If coordinate J (9,8) is translated 10 units left and 1 unit up, what are the coordinates of J'?
(-1, 9)
If coordinate V (1,1) is reflected over the Y axis and then translated up 1 unit, what is the new coordinate?
(-1, 0)
What is the original image called?
Preimage
Dilate the pre image with the scaling factor k = 1/3
A(9, -6) B(12, 3) C(0, -3)
A'(3, -2) B'(4, 1) C'(0, -1)
Which property changes when a figure is reflected across a line?
A side lengths
B angle measures
C perimeter
D orientation
D orientation
A triangle is translated 4 units down and 8 units to the right. Which translation returns it to its original location?
A (x, y) --> (x - 8, y + 4)
B (x, y) --> (x - 4, y + 8)
C (x, y) --> (x + 4, y - 8)
D (x, y) --> (x + 8, y - 4)
A (x, y) --> (x - 8, y + 4)
If coordinate H (5,7) is translated 2 units down and then reflected over the x axis, what are the coordinates of H'?
(5,-5)
What is the transformed shape called?
image
What is the original image of D'(-8, -12) E'(-8, 12) F'(12, -8) if it underwent a dilation by a scale factor of k=2?
D(-4, -6) E(-4, 6) F(6, -4)