Function notation is another way to express the y value of a function. Therefore, when graphing, we can always label the y-axis as f(x) too. It might look confusing, but let us show you how to deal with it.
If f(x)=x, write the following in terms of the function f.
If f(x) = -3x + 7, solve for x if f(x) = -15
The temperature below the crust of the Earth is given by C(d) = 12d + 30, where C is in Celsius and d is in km. i.) Find the temperature 15 km below the crust of the Earth. ii.) What depth has a temperature of 186∘C?