The figures above show the graphs of the functions around f and g. The function f is defined by
f(x)=2x^3+5x^2-x
The function g is defined by
g(x)=f(x-h)-k, where h and k are constants.
What is the value of hk?
I don't know how to get the graph onto the internet but here are the details:
y=f(x) has points:
(-3,6)
(1,6)
y=g(x) has points:
(-4,5)
(0,5)
The answer to this q says:
The second graph moves down 1 and to the left 1. Remember that when a graph moves to the left it is represented as (x+h) - the same as x-(-1). So h=-1. Because a negative k represents moving down, k=1.1*(-1)=-1.
I'm really really confused about the answer. First of all, where did the "1.1" come from?? And second of isn't it h multiplied by k? Therefore if h=-1 and k=-1, then -1*-1 = (positive) 1 - though the answer is -1.
Help lease?