What is the constant of proportionality, and what method did you use to determine this? (A). k = 1.5. I determined this by dividing y/x.

(B). k = 2/3. I determined this by dividing x/y.

(C). k = 5. I determined this by adding y and x.

(D). k = 6. I determined this by multiplying x and y.

you cant answer this dummy

step-by-step explanation:

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step-by-step

not me

step-by-step explanation:

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< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)