Now that you’ve learned about using cell references, it’s time to talk about the different types.
The picture shows two types, relative and absolute.
Absolute references are fixed. They don’t change if you copy a formula from one cell to another. Absolute references have dollar signs ($) like this: $D$9.
As the picture shows, when the formula =C4*$D$9 is copied from row to row, the absolute cell reference remains as $D$9.