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The figure below has a point marked with a large dot.First, rotate the figure 90° counterclockwise about the origin.Then, give the coordinates of the marked point in the original figure and the final figure.

The figure below has a point marked with a large dot.First, rotate the figure 90° counterclockwise-example-1
User Bill Dudney
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1 Answer

15 votes
15 votes

We have a figure that has to be rotated 90° counterclockwise.

We can deduce the rule by graphing:

Then, we can write the rule as:


P=(x,y)\longrightarrow P^(\prime)=(-y,x)

The large dot has coordinates (1, 5),

Then, if we apply the rule, we will get:


P=(1,5)\longrightarrow P^(\prime)=(-5,1)

Answer:

Point in original figure: (1, 5)

Point in final figure: (-5, 1)

The figure below has a point marked with a large dot.First, rotate the figure 90° counterclockwise-example-1
The figure below has a point marked with a large dot.First, rotate the figure 90° counterclockwise-example-2
User Mxx
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