Write an equation as a set of ordered pairs in which the x-value represents the length of a side of a square and the y-value represents the area of the square. Use a domain of 2, 4, 6, 9, and 11.
Create a mapping diagram to display the numbers of days in 1, 2, 3, and 4 weeks. Is this relation a function, why/why not?
2006-12-21 11:34:29 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
OK, for the first one, you need to know that the area of a square is the side length times itself, or the side length "squared". This is NOT a coincidence!
So if the DOMAIN is 2,4,6,9,11, then the RANGE is the square of each number of 2*2, 4*4, etc.
So the first couple of ordered pairs are
(2,4), (4,16), (6,36) - I'll let you do the last two!
The diagram you will have to draw yourself, but I imagine it would look like a graphi, with the x axis having numbers 1 through 4, and the y axis having numbers 7, 14, 21, and 28. Then you can plot 4 points at (1,7), (2,14), etc.
I don't know the strict definition of a relational function, so I can't help with that.
2006-12-22 00:10:26 · answer #1 · answered by firefly 6 · 0⤊ 0⤋
1. If x = 2, 4, 6, 9 and 11 (Domain) then Y = 2^2 (4), 4^2 (16), 6^2 (36), 9^2 (81) and 11^2 (121). So (x,y) = (2,4), (4,16), (6,36), (9,81) and (11,121).
2. Plot the points (1,7), (2,14), (3,21) and (4,28).
2006-12-23 16:26:50 · answer #2 · answered by SPLATT 7 · 0⤊ 0⤋