Given f(x) and g(x) = k·f(x), use the graph to determine the value of k.
a.-2
b.-1/2
c.1/2
d.2

Ais correct answer

It should be a. -2.
first of all, from the graph, you can see that the slope of g(x) is negative so it’s possibly the k is a negative number.
then using the two points given on x=-3, you can see the value of y for both function g(-3)=-2 and f(-3)=1.
now you can solve by just plugging in -2=k*1
the answer should be -2 if you solve algebraically.

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