Aradio telescope has a parabolic dish. radio signals are collected at the focal point(focus) of the parabola. the distance from the vertex of the parabolic dish to the focus is 20 feet. the vertex of the dish is located at a point 30 feet above the ground and 80 feet to the east of a computer that reads and records data from the telescope. the diameter of the dish is 120 feet. what is the depth of the parabolic dish?

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.

the ratios are reciprocals im positive

step-by-step explanation:

they are all positive numbers so it wouldn't be the other ones