What will be the coordinates of the point v' if the point r (4,-3) is rotated 270 degrees counterclockwise around the origin

2nd one in the first row is correct

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

pla·gia·rism

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

step-by-step explanation: