Question

Find domain, range, x and y intercept, Horizontal and vertical asymptote? How do I do it?

f(x)=3^x-9

Answer 1

How do you get the x and y int? My solution set says x-in t: (2,0) and y-int: (0,-8). how do you get that answer?

Answer 2

to find x intercept let y=0 to find y intercept let x=0

Answer 3

to find y intercept; set x=0 so we have y=3^0-9=1-9=-8

Answer 4

well to get the y-intercept.. just substitute x=0 and solve for y:
y=3^0-9 --> y=1-9 -->y=-8, therefor the y-int:(0,-8).
to find the x-int, set y=0 and solve for x, that's:
0=3^x-9 --> 3^x=9 --> x=2, so the x-int is (2,0)

Answer 5

you beat me :(

Answer 6

you did half the answer, and I did half.. we are even :)

Answer 7

lies

Answer 8

Thanks guys :)