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IrinaK [193]
3 years ago
10

How to find the distance AB ? A(0,1) B(2,-3)

Mathematics
1 answer:
Anastaziya [24]3 years ago
4 0

Hey there!!

Distance formula :

\sqrt{(y2-y1)^{2} + (x2-x1)^{2}  }

Coordinates given :

( 0,1 ) and ( 2,-3 )

( y2 = -3 ; y1 = 1 ) ( x2 = 2 ; x1 = 0 )

Plugging in the values :

... \sqrt{(-3-1)^{2}+(2-0)^{2} }

... \sqrt{(-4)^{2}+(2)^{2} }

... \sqrt{16+4}

... \sqrt{20}

... \sqrt{5}×\sqrt{4}

... 2\sqrt{5} units is the distance.

Hope my answer helps!!

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Answer:

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Step-by-step explanation:

When transforming functions, we will reflect/dilate the figure first and then translate it. This is directly from the order of operations.

Since we are trying to determine the transformation that was performed, we can try to map ΔS'T'U' onto ΔSTU. We can start by translating the figure and then determining any reflections/dilations.

First, we can translate ΔS'T'U' up two units to map T' onto T. This is represented by the black triangle in the image below. Let the black triangle be ΔS''T''U''. (T'' and T are the same point.)

Next, notice that from Point T'' to U'', we move nine units right and six units up.

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Likewise, from Point T'' to S'', we move six units left and nine units up.

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Therefore, to map ΔS''T''U'' onto ΔSTU, we dilate ΔS''T''U'' about Point T by a factor of 1/3.

Hence, by reversing the transformations, to acquire ΔS'T'U', we can see that we will dilate ΔSTU by a factor of three about Point T and then a perform a translation of two units downwards.

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