You have a coupon good for $6 off the price of any large pizza. you also get a 20% discount on any pizza if you show your student id. how much more would you pay for a large pizza if the cashier applies the coupon first?

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:

answer: i literally just answered this question but they want me to do it again

step-by-step explanation: