Question

What kind of stretch do these functions represent??

Answer 1

it seems like vertical but I'm not sure

Answer 2

@jhonyy9

Answer 3

try graph them and will see sure - just give value to xa and see what will result to y

Answer 4

i graphed them but then i didnt know what to do from there @jhonyy9

Answer 5

can you post this graph here please ?

Answer 6

I agree that graphing these functions could be very revealing and helpful.
Think: What does "stretch" mean in this math context?

Answer 7

it means that the two functions "stretch" away from each other on the graph @mathmale

Answer 8

No, just one function, the original function. Graph it. Then take a firm hold on the top of the graph and yank it upward. That's "stretching." Does this fact help you to answer this qeustion?

Answer 9

Review your own 2nd comment, above.

Answer 10

oh ok the one function is stretching then. Well, in this specific problem the function is stretching from bottom to top in a vertical manner . IS that it then?

Answer 11

and how would I do this without graphing it?

Answer 12

@mathmale

Answer 13

Practice. Doing this sort of probelm a couple of times ought to make you knowledgeable about "stretching" graphs. Typically we speak of only "vertical stretching" or "horiz. stretching."

In this case, mult. the fn. by 6 stretches the graph vertically, upward. OK?

Answer 14

ok, but the functions itself would represent a vertical stretch, correct?

Answer 15

@mathmale

Answer 16

anyone? its vertical... right?

Answer 17

@jhonyy9 its vertical, correct?