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Here are the graphs of four functions. The equations of the graphs are
$$y=f(x) \quad y=f(x)-8 \quad y=3f(x) \quad \text{and} \quad y=3f(x)+8.$$
Here are the graphs of another four functions. The equations of these graphs are $$y=f(x)\quad y=f(x+20)-8 \quad y=3f(x-25) \quad \text{and} \quad y=-3f(x)+10.$$