SOLUTION: how do you look at a graph and be able to tell wich function it is?

Question 178573: how do you look at a graph and be able to tell wich function it is?
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
you mean whether it is or isnt a function? there is one and only one y value from each value of x. therefore you perform the verical line test If there is any point at which the line intersects with the stated equation more than once then it is NOT a function.
RELATED QUESTIONS
How do you tell on a coordinate graph if it is a function or not???? (answered by richard1234)

Use the graph of y=-x^+4x+5 to answer the following: -x^+4x+5=0 explain how you obtain... (answered by ankor@dixie-net.com)

How do you graph the equation: y= -x + 7? Also how can you tell if it is a... (answered by richwmiller,rfer)

How do you tell wether a function is not a function without a... (answered by pie90010)

see look i get this >> b + 7b - 30 ( b - 3 ) ( b + 10 ) u put " (answered by jim_thompson5910)

Okay so I have this equation: h(x) = x^2 - 1 .........---------------... (answered by josgarithmetic)

I cannot seem to figure the last part of this one out. The problem reads : You would... (answered by rajagopalan)

would you please be able to tell me how to make this equation x-y=-9 into a general form... (answered by checkley77)

hi my name is jessika and i am just leaning how to find segment lengths. i am having a... (answered by stanbon)