Find the value of x?

x = 35

Step-by-step explanation:

Since the sum of angle measures is 180, you can set up this equation:

40 + 3x + x = 180

Combine like terms:

4x + 40 = 180

Subtract 40 from each side:

4x = 140

Divide each side by 4:

x = 35

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: