I'm out of school until jan. due to medical reasons, and i've been having to teach myself. Well my book had really bad examples and i can't fig. these 2 problems out so i just wondering if someone could help me?
Write an equation for each relation
28. {(-3,10),(-2.5),(-1,2),(0,1),(1,2)(2.5)(3.10)}
30. {(2,12),(1,48),(-1,48),(-2,12),(-2,12),(-4,3)}
2006-11-11 13:47:34 · 3 answers · asked by imcool_likeyou 2 in Education & Reference ➔ Homework Help
28. f(x)=x^2+1
30. f(x)=48/x^2 (you might need some more pairs to see if this is correct.)
2006-11-11 13:54:24 · answer #1 · answered by gpwarren98 3 · 0⤊ 0⤋
Assume all relationships can be explained by y=m(x)+b, where y and x are the numbers you are given.
There are two ways. Plot each point on a graph, then draw a straight line that goes through all the points and figure out the slope (m) and the intercept (b).
Or
Write out each equation for a single problem.
-3=m(10)+b
-2=m(5)+b
-1=m(2)+b
0=m(1)+b
Solve for "m" and "b" by using series of equations or substitution.
Hope this is what you were looking for.
2006-11-11 21:58:39 · answer #2 · answered by Shanna J 4 · 1⤊ 0⤋
The first one: (X + 1, 1/2 Y) The second one: I'm not sure. Sorry. Hope that helps at least a little. :) Good luck and get better soon!
2006-11-11 21:57:22 · answer #3 · answered by FantasyBookworm 4 · 0⤊ 0⤋