Examples:
(x,y) -> (x, -y): x value did not change, so it is a reflection over x –axis.
(x,y) -> (-x, y): y value did not change, so it is a reflection over y –axis.
What is the rule?
ex:
(x,y) -> (y,x)
Examples:
(x,y) -> (x, -y): x value did not change, so it is a reflection over x –axis.
(x,y) -> (-x, y): y value did not change, so it is a reflection over y –axis.
What is the rule?
ex:
(x,y) -> (y,x)
Examples:
(x,y) -> (x, -y): x value did not change, so it is a reflection over x –axis.
(x,y) -> (-x, y): y value did not change, so it is a reflection over y –axis.
A (2, -9) ----> A’ (2, 9)
Examples:
(x,y) -> (x, -y): x value did not change, so it is a reflection over x –axis.
(x,y) -> (-x, y): y value did not change, so it is a reflection over y –axis.
B (4, -13) -----> B’ (4, 13)
Write the rule.
Write the rule.
Which part of the coordinate is negated and which stays the same?
Which part of the coordinate is negated and which stays the same?