You are Here: Home >< Maths

# Sketching Exponents C2 - Quick Query watch

1. In my book it skips over this , so I'm not really sure about it .

For the first, would I simply construct a table eg of x values and then y values ? and then sketch that plot ? Or is there a general trend ?

Similarly, for number 2, would I do the same but also asign numbers for k ?
2. Assuming you know what y=3^x looks like then y=2(3^x) is a vertical stretch of scale factor 2 i.e. the y-coords are double and the x-coords unchanged. So this graph will pass through (0,2) instead of (0,1). It's general shape is similar to y=3^x, i.e. the y-values increase rapidly as x increases and the y-values decrease rapidly as x decreases. The x-axis is an asymptote.

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 25, 2011
Today on TSR

### My dream is to become a WAG

I wont settle for anything else!

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams