Page 379 - Math Smart - 7

@ Rectangle L'M'N'O' is the position of the image of rectangle LMNO after it was reflected about
the >'-axis.
a) Draw the object on the coordinate grid.
b) Write the coordinates of the figure LMNO.
c) Rectangle L'M'N'O' is reflected about the x-axis to form rectangle L"M"N"0".
i) Draw rectangle L"M"N"0".
li) Write the coordinates of rectangle L"M"N"0".

L( ) L"(
L' M'
M( M" (
0' N'
N{. N" (.
X 0(. O" (.
5 -4 - ^ - i . 1

s

©*Challenge! If a point Q (2, 4) is reflected about the.v-axis, what will the coordinates of point Q' be?

For Questions 8 and 9, use a piece of graph paper to draw a set of suitable axes and plot the graphs.

@*Chal!enge! 0*Challenge!
a) Plot MNO on the coordinate grid where a) Plot triangle ABC on the coordinate grid
M M, 4), N (-3, 2) and O (-5, 2). where A (1, 0), B (2, -2) and C (-1, -2).
b) Draw the graph of >' = -1. b) Draw the graph of y = x+ 1.
c) Draw the image of triangle MNO when it c) Draw the image of triangle ABC when it
is reflected about the line _y = -1. is reflected about the line >? = x + 1.
i) Label the image. i) Label the image.
ii) Write the coordinates of the image. ii) Write the coordinates of the image.

d) Draw another image of triangle MNO
when it is reflected about the line x = 2.
i) Label the image.
ii) Write the coordinates of the image.

Spotlight

A kaleidoscope is a tube in
Find out how a
which mirrors are used to
kaleidoscope is made
reflect an object and create
by watching this video
multiple images.
When you look through Q
a kaleidoscope you see
i
patterns like this)