Remember: The signs of a pair tell its corner. A mirror changes the signs.
Name the places
1
What is the x-number of point A?
2
What is the y-number of point B?
3
Which pair names point C?
(−3, −6)(−6, −3)(6, 3)(−6, 3)
4
A point has a positive x-number and a negative y-number. Which corner is it in?
Quadrant 1, top rightQuadrant 2, top leftQuadrant 3, bottom leftQuadrant 4, bottom right
5
Circle every point in the bottom right corner (Quadrant 4).
(−4, −4)(6, −2)(−1, 8)(1, −9)(9, 3)
6
Point A is at (−7, 4). Its mirror image across the y-axis is at (, 4). What is the new x-number?
7
The triangle is in the top right corner. Which graph shows its mirror image across the y-axis?
Graph 1Graph 2Graph 3
8
Point A is at (−6, 9). Which point is its mirror image across both axes?
(6, 9)(−6, −9)(6, −9)
9
Which mirror turns A into B?
The y-axisThe x-axisBoth axes
10
Mirror (−3, 2) across the x-axis and then across the y-axis. It lands at (3, −2).
TrueFalse
11
P is at (−6, 2) and Q is at (4, 2). How many units apart are they?
12
The rectangle has corners at (−4, 3), (2, 3), (2, −1) and (−4, −1). How many units long is its top side?
13
Pip says (−2, 5) and (2, −5) are mirror images across the x-axis. Write how you know Pip is wrong, and the pair that is the mirror image of (−2, 5) across the x-axis.
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