Does this graph show a function? Explain how you know.

yes

Step-by-step explanation:

this is an example of a quadratic function.

Yes it is a function.

Step-by-step explanation:

A parabola, or a quadratic function, is one of the form f(x) = ax2 + bx + c, where a, b, and c are numbers which are not equal to zero. Quadratic functions are always functions.

30 people weigh 160 pounds or more

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2