Is x ^ 2 + y ^ 2 = 6 a function?

not a function

Step-by-step explanation:

for example

In order for an equation to represent a function any single value of x must have at most one corresponding value of y which satisfies the equation.

For x2+y2=9

if (for example) x=0

there are two values for y (namely +3 and −3) which satisfy the equation

and therefore the equation is not a function.

a 360 degree rotation

step-by-step explanation:

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)