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

two lines labeled f of x and g of x. line f of x passes through points negative 4, 0 and negative 3, 1. line g of x passes through points negative 4, 0 and negative 3, negative 2.
-2
-1/2
1/2
2