Which of the following represents the graph of f(x) = 2^x - 3 ?

Question

anonymous · Answer

attachment

anonymous · Answer

would it be the third graph?

anonymous · Answer

Try plugging in points to check.

anonymous · Answer

If you have multiple choice answers, you might as well check the solutions.

anonymous · Answer

What happens when x is 0, what happens at x=2 at x=2 at x=3? What happens when x=-1.
See which graph matches the numbers that you compute.

anonymous · Answer

the first?

directrix · Answer

Evaluate the function for x = 0 and find where it cuts the y-axis. Of the four options, you'll know which is the answer when you do this. Assuming you use graphing software, check out the following link: http://www.wolframalpha.com/input/?i=y+%3D+%282%5Ex%29++-+3

anonymous · Answer

Graphing software is completely unnecessary. This can be solved with mental arithmetic.

anonymous · Answer

Anything to the zeroth power (except zero of course) = 1, so when x=0, y = 1-3 = -2, so the graph cuts at (0,-2).