Question

hi I have a question about subtracting two graphs that are drawn on the same graph, questions says to subtract f(x)-f(g)

Answer 1

I've attached rough graph of what it looks like

Answer 2

f(x) - f(g)? or f(x)-g(x)?

What you wan to do if all you need to do is sketch them, is create a new function, say h(x). h(x) happens to be equal to f(x)-g(x). If this is so, for any value x, h will have the value of whatever f is at x, minus the value of g is at x.

(Similar logic applies if it's f(x) - f(g))

Answer 3

ok so did you look at the graph I drew? so are we subtracting the y's?

Answer 4

Yup, that's basically all there is to it. Unless your problem is expecting more.

Answer 5

i've forgot to include that these graph points are closed and opened at another so its not just a line sort of thing, any way s so if i was to look at where the graph last point is it would be for the f(x) the point are 0,3 and 5,7 and for the g(x) the points are -2,3 and 7,-6 so how would i subtract the graphs if there is two points for each function?