Rule A: (x, y) -> (-x, y)
Step 1 - Has been completed for you. For Rules B through G, you will need to produce your own triangle.
Rule A: (x, y) -> (-x, y) Step 2
State the coordinates of the IMAGE triangle after applying the rule to the PREIMAGE triangle.
Rule A: (x, y) -> (-x, y) Step 3 Directions for Graphing IMAGE triangle on coordinate plane
Use the graph above to plot the image's coordinates.
a. Use the INPUT line, located below the graph. to type in the IMAGE's coordinates for A.
b. a point D should appear
c. repeat for the B & C coordinates
d. you should have three points (if the points are connected) that look congruent to the pre-image triangle ABC. If it doesn't look congruent, check your points from Step 2.
Rule A: (x, y) -> (-x, y) Step 4 Identify the Transformation
Identify the transformation, which includes a line or its degree. - reflection over y = 0, also called the x-axis - reflection over the x = 0, also called the y-axis - rotate 90 degrees to the left, called a positive 90 degrees - rotate 90 degrees to the right, , called a negative 90 degrees - rotate 180 degrees either to the right or left - reflection over the y = 1x + 0, in simplified form y = x. - reflection over the y = -1x + 0, in simplified form y = -x. Copy and Paste your Answer
Rule A: (x, y) -> (-x, y) Step 5 Directions to Confirm your selected Transformation
Use Geogebra's transformation tools to determine the transformation.
Directions: For reflection over axis: select triangle then axis
For reflection of y = x or y = -x, use 
to draw in y = x or y = -x. Then select the triangle then the line.
For rotation, copy and paste either:
rotate(polygon(A, B, C),90)
rotate(polygon(A, B, C),-90)
rotate(polygon(A, B, C),180)
to draw in y = x or y = -x. Then select the triangle then the line.
For rotation, copy and paste either:
rotate(polygon(A, B, C),90)
rotate(polygon(A, B, C),-90)
rotate(polygon(A, B, C),180)Rule A: (x, y) -> (-x, y) Step 6 Confirm your selections for the transformation is correct.
Did the image triangle A'B'C' land on your points D, E, and F?