Section 312: Reflected movement
Authored by Michael Weingarden
Mathematics
9th - 12th Grade
CCSS covered
Used 23+ times
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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
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
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
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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