I answered this on Friday. See the related questions below.
Was there something unclear?
is this function - y=3^x open up or down? is it a vertical stretch or compression?
6 answers
yes, about the vertical compression and strecth
and how the range is y>0
if x>0, 3^x > 1
if x<0, 3^x is between 0 and 1.
There is no value of x that will produce a negative result.
As for the stretch, I have to ask again, compared to what?
3^x is stretched when compared to 2^x, but it is compressed when compared to 4^x.
if x<0, 3^x is between 0 and 1.
There is no value of x that will produce a negative result.
As for the stretch, I have to ask again, compared to what?
3^x is stretched when compared to 2^x, but it is compressed when compared to 4^x.
Hmmm. ACtually, on the stretch, I'd gave to say neither.
a^x passes through (0,1) for any value of a. So there can be no vertical scale factor. The stretch/compression is reversed as you cross the y-axis.
a^x passes through (0,1) for any value of a. So there can be no vertical scale factor. The stretch/compression is reversed as you cross the y-axis.
i don't understand. its fine