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Section 312: Reflected movement

Authored by Michael Weingarden

Mathematics

9th - 12th Grade

CCSS covered

Used 23+ times

Section 312: Reflected movement
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11 questions

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1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

If mouseX = 40, then 400-mouseX must equal ____

Tags

CCSS.6.EE.A.2C

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

If mouseX = 300, then 400-mouseX must equal ____

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.5

CCSS.6.EE.B.6

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

How wide is the canvas?

Tags

CCSS.2.MD.B.5

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

What is the height of the canvas?

Tags

CCSS.3.MD.D.8

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When you move the mouse from left to right...

mouseX goes from 0 to 400

mouseX goes from 400 to 0

mouseY goes from 0 to 400

mouseY goes from 400 to 0

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSF.IF.C.7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you want reflect a shape on the canvas and you draw it at mouseX, then it will be ____ from the left edge of the canvas.

mouseX

mouseY

400-mouseX

There is no way of knowing

I'm really not sure

Answer explanation

Media Image

See the black dot in the image? Remember, wherever the mouse cursor is, mouseX and mouseY will be the x and y value of the canvas. If the mouse cursor is at 120, then it is 120 from the left edge. If the mouse cursor is at 270, then it is 270 from the left edge. So, if the mouse is at mouseX, then it is mouseX from the left edge.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The red dot is at (mouseX, 240), the reflected dot (the blue one) is at...

(mouseX, 240)

(mouseX-400, 240)

(133, 240)

(400-mouseX,240)

I'm really not sure

Answer explanation

Media Image

Notice the red dot is mouseX from the left edge. Notice that when the blue dot is the same distance from the right edge, the blue dot will be 400-mouseX from the left edge. So, if we want the blue dot to be a reflection of the red dot, then the x position of the blue dot can be described as 400-mouseX. So, the position of the blue dot must be (400-mouseX, 240).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

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