2006-11-30 14:49:32 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
I need to find the fule for this given function. Please help me to understand how to work this out.
2006-11-30 15:01:31 · update #1
More concisely, f(-5)=-8, f(-3)=-2, f(-2)=1, f(1)=10.
f(x) can equal anything as long as it fits these points. It seems to form a linear line as shown above...
2006-11-30 14:56:52 · answer #1 · answered by John H 4 · 0⤊ 0⤋
I believe you are looking for the equation of a straight line here:
We can get the slope of that line by taking one pair (-5, -8) and subtracting it from another (-3, -2) to get:
m = change in y / change in x = (-8 - -2) / (-5 - -3) = 3
This gives us a partial equation of y = 3x +b
Plugging in one of these pair into the partial equation, we can solve for b:
10 = 3(1) +b
b = 7
Thus f(x) = 3x +7
Verify this by plugging in the four pairs above and you'll see it's correct.
2006-11-30 14:59:58 · answer #2 · answered by sep_n 3 · 0⤊ 0⤋
3x+7
2006-11-30 14:55:52 · answer #3 · answered by colgatetotalgel 2 · 0⤊ 0⤋
there will be iincountable f(x),which can fit the conditions above.so,define what kind of f(x) yours is,
2006-11-30 14:58:13 · answer #4 · answered by Anonymous · 0⤊ 0⤋