Given f(x) and g(x) = f(k⋅x), use the graph to determine the value of k.

graph: two lines labeled f of x and g of x. line f of x passes through points negative 10, negative 6 and negative 5, negative 1. line g of x passes through points negative 2, negative 6 and negative 1, negative 1.

5
1/5
-1/5
−5