I have a test tomorrow, and I need serious help and quick! If a graph has a u shaped curve and it's pointing down, what is it? a relation? function? What if it's curved up?
2007-09-13 16:13:28 · 6 answers · asked by Sassafras 1 in Science & Mathematics ➔ Mathematics
If you can draw a vertical line through a graph so that it intersects the graph more than once, then the graph is NOT a function, but rather a relation.
If every vertical line intersect the graph in only one point, then the graph IS a function.
2007-09-13 16:20:26 · answer #1 · answered by JM 4 · 1⤊ 0⤋
A graph is a function if there is no point on the graph directly above another point on the graph (vertical line test). If you're looking at a list of ordered pairs, it's a function if there are no two pairs with the same x but different y's. All this has NOTHING to do with whether or not the graph curves up or down. Many do both.
2007-09-13 16:21:13 · answer #2 · answered by Philo 7 · 0⤊ 1⤋
umm... you need serious help...
well it depends...
there's something called the vertical line test... draw a vertical line, if it only intersects the graph at one point, you have a function. a relationship can be anything...
what you seem to be talking about is a parabola. a parabola with a negitive primary coefficient (a negitive in front of the x^2)
if it's pointing to the side, it isn't a function, it's only a relation (a hyperbola).
2007-09-13 16:21:04 · answer #3 · answered by The greatest and the best. 5 · 0⤊ 1⤋
A functional graph would be used to monitor a single, individual situation or entity.
A relation graph would be comparing two or more of the same.
2007-09-13 16:17:24 · answer #4 · answered by Chazman1347 4 · 1⤊ 2⤋
if there are two comparative graphs its a relation....if they are independent in their monitoring they are function
2007-09-13 16:28:07 · answer #5 · answered by Anonymous · 0⤊ 1⤋
asdfsa
2016-05-19 01:04:27 · answer #6 · answered by Anonymous · 0⤊ 0⤋