Question: Write the equation for $g(x)$ in terms of $f(x)$ in at least two different ways.
g(x) =
f(x)
g(x) =
g(x) =
Graph: two sinusoidal curves on the same coordinate plane. The blue graph labeled $g(x)$ is the same shape as the red graph labeled $f(x)$, shifted upward by 8 units; equivalently, $f(x)$ is shifted downward by 8 units. position_hint = center
User: how to do this
1. **State the problem:** We need to express $g(x)$ in terms of $f(x)$ given that the graph of $g(x)$ is the same as $f(x)$ but shifted upward by 8 units.
2. **Recall the vertical shift rule:** If a function $f(x)$ is shifted vertically by $k$ units, the new function is $f(x) + k$.
3. **Apply the rule:** Since $g(x)$ is $f(x)$ shifted upward by 8 units, we have:
$$g(x) = f(x) + 8$$
4. **Express $f(x)$ in terms of $g(x)$:** Since $f(x)$ is $g(x)$ shifted downward by 8 units, we can write:
$$f(x) = g(x) - 8$$
5. **Rewrite $g(x)$ in terms of $f(x)$ using the second expression:** From $f(x) = g(x) - 8$, solve for $g(x)$:
$$g(x) = f(x) + 8$$
6. **Alternative expression:** Another way to write $g(x)$ in terms of $f(x)$ is to isolate $g(x)$ from the first equation or use the inverse operation:
$$g(x) - 8 = f(x)$$
or equivalently:
$$g(x) = f(x) + 8$$
**Final answers:**
$$g(x) = f(x) + 8$$
and equivalently,
$$f(x) = g(x) - 8$$
These two equations show the relationship between $g(x)$ and $f(x)$ with the vertical shift of 8 units.