Which of the following statements are true regarding functions? Check all that apply.
O A. The horizontal line test may be used to determine whether a
function is one-to-one.
B. A function is a relation in which multiple values of the input
variable are paired with at least one of the output variable.
M C. The vertical line test may be used to determine whether a relation
is a function.
O D. A sequence is a function whose domain is the set of rational
numbers.

could you provide figure.

2

step-by-step explanation:

< 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)

i dont understand

step-by-step explanation: