ok, I need some help with my math homework. At the top, it says analyzing the graph of a function. Then it says for the graph f(x) below, find the indicated information. And it shows a graph with seven points on it.
and it says a) find f(0)
b) find f(2)
c) find f(-6)
so, can you tell me how to find f? Is it just a point on the x axis? Any help would be great.
2007-09-15 21:25:19 · 5 answers · asked by Coma White 5 in Science & Mathematics ➔ Mathematics
1. finding f(0) means that you look at the vertical line intersecting x=0 (which is the y-axis in this case). Follow the vertical line until it hits the graph then see what value of y it is.
2. Follow the same procedure for f(2) except that you start from the vertical line intersecting x=2
3. Follow the same procedure for f(-6) except that you start from the vertical line intersecting x= -6
and so on and so forth....
2007-09-15 21:31:54 · answer #1 · answered by Pakyuol 7 · 0⤊ 0⤋
It is difficult to answer this without seeing the graph itself, but hopefully this will lead you on the correct path.
The notation f(0) means what is the y value at the x = 0 point on the graph. I'm assuming that of the seven points on the graph, there is one at x = 0. All you need to do is read the y-value for that point.
f(2) and f(-6) would be found in a similar fasion. Just find the point with 2 and -6 respectfully on the graph and record the appropriate y-value.
As stated, without the graph to look at or analyze, it is difficult to advise you further.
2007-09-16 04:33:15 · answer #2 · answered by lhvinny 7 · 0⤊ 0⤋
take the equation and replace the x with the zero.
i.e. 3x+20 becomes 3(0)+20 so (0)=20 on the x axis
3(2)+20 becomes 26 on the x axis,
same for cubes and squares ,
2007-09-16 04:35:36 · answer #3 · answered by Del 3 · 0⤊ 0⤋
I can`t really understand what it is you need, but:
You will have f(x) = something, an equation with x in it.
When it asks you to find f(0), it`s asking you to find the number value of the equation when you substitute the value x = 0 into it. So, if, for example,
f(x) = 3x -5, then if x = 0,
f(x) = 3x0 - 5,so
f(x) = -5.
Same with f(2) and f(-6). Hope this helps, Twiggy.
2007-09-16 04:36:45 · answer #4 · answered by Twiggy 7 · 0⤊ 1⤋
since the graph is an f(x) graph...simply sub 0 for (a)..2 for (b) and (-6)..read off from the graph.
2007-09-16 04:32:25 · answer #5 · answered by mistYellOw_chElx 2 · 0⤊ 0⤋