Prove that the two circles shown below are similar. circle x is shown with a center at negative 2, 8 and a radius of 6. circle y is shown with a center of 4, 2 and a radius of 3.

They are similar because the radius of circle x is a multiple of circle y. proof: translate smaller circle y to the location of circle x  so that they are concentric (same center location (2, the translation would be moving the center of y left 2 units and up 6 units. now that the centers are concentric a dilation is need to increase the size of circle y to coincide with circle x. dilation by the scale factor, k k = 6/3 k = 2 as you can see the scale factor, k is a ratio of the radius thus proving the circles are similar

All points to the left of zero on a horizontal number line are negative. a number line is a picture of a graduated straight line that serves as abstraction for real numbers. this number line can be extended to the left to represent numbers which are smaller than 0. such numbers are called negative numbersmark me brainliest