A student examines two graphs representing functions y=f(x) and y = g(x). The student notices that
the graphs of the functions f (x) = 5xl - 4 and
g(x) = x2 - 4 both have a y-intercept at the point
(0, -4). The student makes the following claim:
"For any constant c, the location of the y-intercept for the
graphs of cof (x) and cog (x) is the same."
Show that this claim is true by giving the y-value, in terms
of c, of the ordered pair that represents the y-intercept
(0, y) for the graphs of cof (x) and cog (x).