Estimates from the line

On the graph, an estimate is read from the line: up from $\displaystyle x$, or across from $\displaystyle y$. The line gives estimates. For $\displaystyle x=3$, press , type 3, then and the closing bracket, : 6.528394256. For $\displaystyle y=46$, type 46, then and the opening bracket, : 24.61590706.