SOLUTION: I'm trying to identify 5 ordered pairs for the following equation: f(x)=3^x+7 When I graph the equation, it looks like I'm coming out with: -3, -4, -5, -6, and -7 as my 'x' coor

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: I'm trying to identify 5 ordered pairs for the following equation: f(x)=3^x+7 When I graph the equation, it looks like I'm coming out with: -3, -4, -5, -6, and -7 as my 'x' coor      Log On


   

Question 155473: I'm trying to identify 5 ordered pairs for the following equation:
f(x)=3^x+7
When I graph the equation, it looks like I'm coming out with:
-3, -4, -5, -6, and -7 as my 'x' coordinates. My 'y' coordinates appear to be -1, 3, 9, etc... Am I doing this right?
Thanks for your help!
Found 2 solutions by oscargut, stanbon:
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=3%5Ex%2B7
x=-2 then f%28-2%29=3%5E-2%2B7=%281%2F9%29%2B7
x=-1 then f%28-1%29=3%5E-1%2B7=%281%2F3%29%2B7
x=0 then f%280%29=1%2B7=8
x=1 then f%281%29=3%2B7=10
x=2 then f%282%29=3%5E2%2B7=16

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
identify 5 ordered pairs for the following equation:
f(x)=3^x+7
-----------------
f(-1) = 3^(-1) + 7 = (1/3) + )
f(3) = 3^(3) + 7 = 27 + 7 = 34
f(-2) = 3^(-2)+7 = (1/9) + 7 = 7 1/9
f(4) = 3^(4) +7 = 81 + 7 = 88
f(-3) = 3^(-3) + 7 = (1/27) + 7 = 7 1/27
===========================================
Cheers,
Stan H.