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meggy
Which of the following relations is a function? A. { (1, 2), (1, 3), (1, 4), (1, 5) } B. { (1, 3), (2, 3), (4, 3), (9, 3) } C. { (5, 4), (-6, 5), (4, 5), (4, 0) } D. { (6, -1), (1, 4), (2, 3), (6, 1) }
A function is when no input repeats which means no x coordinate can go to more than one y. So which one has a relation where the x doesn't repeat?
There's only one choice where this happens!
yep no clue what or how tto do this
In an ordered pair the first number is x and the second is y. So, if I have an ordered pair of (2,6). x is 2 and y is 6. Now look at your choices. the only relation that an x doesn't repeat is choice B, because your x's are: 1,2,4,9.
D, plot is on graph and you will get answer
D is wrong It is B. I am a math teacher!
vertical line test also proves what I'm saying. If you plot the points and draw vertical lines through each point. Then each line should only go through one point. More than one point makes it NOT a function and if you graph D a vertical line would go through x at 6 twice which proves D is WRONG!
i dont know neither do i care yor a teacher or what, plot thes points on paer and get yor answer
Learn to plot points correctly and know what a function is.
well same thing for thois one { (2, 6), (3, 9), (4, 2), (3, 6) } B. { (2, 8), (3, 6), (2, 4), (0, 2) } C. { (3, -2), (4, 7), (-2, 5), (-4, 5) } D. { (4, 7), (-2, 5), (1, 3), (-2, 1) }
lol thanks thats wat ma concern is plot it first
Meggy if you ask your math teacher he will confirm what I'm saying! Answer is C on the second one. Same answer as above. Hope that helps.
oook and im online schooling i dont have teachers
ya can put yor questions here and everyone can help ya to figure out
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