Question

The graph shows the projected altitude f(x) (in thousands of feet) of an airplane scheduled to depart an airport at noon. If the plane leaves four hours late, what function represents this transformation?

Answer 1

so based on this graph, when the altitude changes at noon, we should assume that the plane has taken off agreed?

Answer 2

agreed

Answer 3

if the plane leaves 4 hours late, we need the graph to increase at 4 pm instead which is a horizontal translation

Answer 4

one of those four are deff the answer. i wish i knew which im really freaking out :(

Answer 5

right, so now how to we chose the correct one?

Answer 6

hmm..

Answer 7

a way to remember is f(x+c) shifts it LEFT TO -C,

this is because when does x+c = 0? when x = -c, so it shifts the origin to -c

Answer 8

thats true. but i don tknow the answer :(

Answer 9

so if we want it to shift right, its a minus sign

f(x-c) will shift the function right c units.

so to get the function to start at 4 it is f(x-4)

Answer 10

thanks so much. you are a life saver. D right? hehe

Answer 11

i didn't see any letters

it is y=f(x-4) with a graph that starts at 4 pm

Answer 12

scroll up i attatched two files witch 4 options ABCD I think its D

Answer 13

nevermind its B

Answer 14

good luck!

Answer 15

eZ