A. The point (2.5, 10) indicates that the cost is $10 for 2.5 pounds of cheese. B. This graph includes decimal values, so it does not show a proportional relationship.
C. This graph line has a constant rate of change and passes through the origin, so it shows a proportional relationship.
D. The constant of proportionality is 1 because the line goes to the right one unit and up one unit.
E. The point (1, 4) indicates that 4 pounds of cheese cost $1.

I think the answer is E

Step-by-step explanation:

the answer is simply just 6n add the two together as they have an n

< 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)