Question

am i correct? its a negative but the degree is 3

Answer 1

well you can prove you are right by putting in a test number for x. For example 4, and then find y and see if it fits the graph

Answer 2

so you mean :

f(x) = -1/2 (4)^3?

Answer 3

yes, then solve, so that could also look like y=-1/2(4)^3 and solve for y. and the best way to prove your answer is right, do one more so then you check two points rather than one

Answer 4

oh and i see the graph is a bit small so if you must, try small numbers like 1 and 2, works the same

Answer 5

ok:

fx = -1/2(2)^3

fx = -1/2 x 8

fx = -4

Answer 6

and:

fx = -1/2

Answer 7

good, and so for -4 check the graphs, which graph has the point (2, -4)? and then that's your answer

Answer 8

graph d

Answer 9

yup, so yes you had the right answer, but now you understand how to check rather than just knowing the answer to one problem

Answer 10

well i hope you understand

Answer 11

thank you i do :)