We can graph this system in the standard window by solving each equation for \(y\text{.}\) We enter

\begin{align*}
Y_1\amp = (21.06 - 3X)/-2.8\\
Y_2\amp = (5.3 - 2X)/1.2
\end{align*}

and then press `ZOOM` \(6\text{.}\) If we trace along the graph to the intersection point, we will not find the same coordinates on both lines. The intersection point is not displayed in this window. Instead, we can use the intersect feature of the calculator.

Using the arrow keys, we position the Trace bug as close to the intersection point as possible. We then press `2nd``CALC` to see the Calculate menu. We press 5 for intersect, and respond to each of the calculator’s questions, First curve?, Second curve?, and Guess?, by pressing `ENTER`. The calculator then displays the intersection point, \(x = 4.36\text{,}\) \(y = -2.85\text{.}\)