Is defined on q by a relation x y if and only if y x+ 4k forsome integer k prove that~ is an equivalence relation.

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The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction