Find the midpoint of AB A B . Question 5 options: (4, 4) (1, 1) (3, 1) (10, 4)

Mathematics

1 answer:

zaharov [31]3 years ago

3 0

A (-2, 0)

B (4, 2)

so mid point (x,y) of 2 coordinates(x1,y1) and (x2,y2) is given as

(x,y) = ( (x1+x2)/2 , (y1+y2)/2)

= ( (-2+4)/2, (0+2)/2)

= (2/2, 2/2)

= (1, 1)

so your answer is (1,1) that is option 2

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Which rule yields the dilation of the figure QRST centered at the origin?

denis-greek [22]

A) (x, y) → (3x, 3y)

<h2>Explanation:</h2>

When you dilate an object, you enlarge or reduce the size of it. To do this, we need a scale factor which allows us to make the object larger or smaller depending on the value of that factor. Let's call this factor as k, then it is true that:

If k > 1, the object will be larger than the original one.
If k < 1, the object will be smaller than the original one.

If the dilation is performed centered at the origin, then corresponding points of the original and dilated figures will be connected by straight lines, being the center of dilation the point where all the lines meet.

The only option that meets this requirement is:

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Whose scale factor is k = 3 making the dilated figure larger than the original one.

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