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anonymous
 4 years ago
Which of these equations represent functions? Check all that apply.
A.
y = x2
B.
y = 3x
C.
x2  y2 = 1
D.
y2 = x2
anonymous
 4 years ago
Which of these equations represent functions? Check all that apply. A. y = x2 B. y = 3x C. x2  y2 = 1 D. y2 = x2

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thanks loli got 1 right

mathstudent55
 4 years ago
Best ResponseYou've already chosen the best response.1c & d are not functions.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1357706214919:dw

mathstudent55
 4 years ago
Best ResponseYou've already chosen the best response.1@ankolix A function is a realtion that maps each element of its domain to a single element of its range. A parabola that opens up or down is a function. A parabola that opens right or left is not a function.

mathstudent55
 4 years ago
Best ResponseYou've already chosen the best response.1dw:1357706562084:dw

mathstudent55
 4 years ago
Best ResponseYou've already chosen the best response.1An easy way to tell if a relation is a function from a graph is the vertical line test. Think of a vertical line moving from left to right on the graph. If in any position, the vertical line intersects more than one point of the relation, then the relation is not a function.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thanks sooooooo much for the help!!!!!!!!!!

mathstudent55
 4 years ago
Best ResponseYou've already chosen the best response.1You're very welcome.
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