1. Is the relation shown below a function? Use the graph below to
justify your answer.
(0, 3), (1,4), (2, 3), (3, 0), (5, 4)
у
7
6
5
4
3
2
1
0 1 2 3 4 5 6 7 8 9

x = 25/2304

step-by-step explanation:

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

the answer is  

a.

28 ft2

step-by-step explanation: