The student government club makes a poster for a school dance, The dimensions shown are in inches. Different club members think about the total area of the poster in different ways. a. Brett thinks of the area of the poster as the product of the total length and the total width. Complete Brett's expression. .+ 6)·(4+

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i can't solve unless i know what the line is

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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.

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