Reflecting a point in the y-axis

Difficulty Starter · Set eu817k

Give each new point as x, y.

Fill in what you can and press Check. Nothing you type is sent anywhere.

1
Reflect (2, -5) in the y-axis.
2
Reflect (-3, -3) in the y-axis.
3
Reflect (4, -3) in the y-axis.
4
Reflect (-3, 3) in the y-axis.
5
Reflect (4, -2) in the y-axis.
6
Reflect (6, -5) in the y-axis.
7
Reflect (6, 2) in the y-axis.
8
Reflect (4, 4) in the y-axis.
9
Reflect (4, 2) in the y-axis.
10
Reflect (-3, 6) in the y-axis.
11
Reflect (5, 4) in the y-axis.
12
Reflect (2, 1) in the y-axis.
13
Reflect (-3, 3) in the y-axis.
14
Reflect (6, 2) in the y-axis.
15
Reflect (-4, 2) in the y-axis.
16
Reflect (-6, -3) in the y-axis.
17
Reflect (-6, -6) in the y-axis.
18
Reflect (-1, -2) in the y-axis.
19
Reflect (2, 3) in the y-axis.
20
Reflect (-4, 1) in the y-axis.

What is in this set

The numbers in this set run from 1 to 6.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 100% of the problems: a reflection in the y-axis leaves the y coordinate alone and changes the sign of the other one.
Answers are a short answer exactly as the problem asks for it.

Drawing 240 problems from this page produced 112 different ones, 47% — so a sheet of 20 will come back to a problem you have seen — there are only so many sensible ones of this kind.

The same skill, harder or easier

We would put this in front of a grade 6 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.