Miguel wants to repair his home. He places a 17 foot ladder up against the side of the house 8 1/4 feet from the base of the house. What is the height of Miguel home, x, from the ground up of the ladder at the roof, to the nearest hundredth of a foot?

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

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:

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)