The sum of 13 and twice a number and is it linear

Step-by-step explanation:

The number is already defined as ' h '. "Twice" means times by 2. So, 13 and twice 'h' are being added together. Here 13 and h are to be added, and the answer is doubled.

answer: i believe c. is the answer sorry if i am wrong

step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: