SOLUTION: Hi - If a question gives an exponetial or logarithmic equation and asks you to find the x and y-intercepts how would you find them? For example: y = 2^(x+1) - 4 y = log2(x+5

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Hi - If a question gives an exponetial or logarithmic equation and asks you to find the x and y-intercepts how would you find them? For example: y = 2^(x+1) - 4 y = log2(x+5      Log On


   

Question 1096941: Hi
- If a question gives an exponetial or logarithmic equation and asks you to find the x and y-intercepts how would you find them?
For example:
y = 2^(x+1) - 4
y = log2(x+5)
Thankyou!
Answer by ikleyn(52847) About Me  (Show Source):
You can put this solution on YOUR website!
.
1.  For the equation  y = 2^(x+1) - 4

        y-interception  is the value of "y" at  x= 0,   which in this case is 2-4 = -2.

        x-interception  is the value of "x" where y = y(x) = 0.   

              In this case it is the root of the equation  2^(x+1) - 4 = 0, which is x = 1.