If a function y$($x$)$ appears as shown in each of the diagrams shown below, would two$-$point linear interpolation yield estimates of y that are too high, too low, or correct? If the two$-$point linear interpolation formula $($Equation $2\mathrm{.}7-1)$ were used to estimate y$($x$)$ from the tabulated values of $($x$1,$ Y$1)$ and $($x$2,(1)/(2)2)$ in plot b$),$ would the estimated value be too high or too low?