To graph the equation we first have to rewrite the left-hand side and right-hand side as linear functions in slope-intercept form.
y=2.1x+0.6 and y=- 1.4x+6.9
Let's enter these equations in our calculator by pressing Y= and then writing them on the first two rows.
When the equations have been entered, we can plot them by pressing GRAPH.
To find the intersection point we can use the tool intersect, which we find by pressing 2nd and CALC.
Having selected intersect, we will see the graphs again. Now we have to choose the points between which we want to calculate the intersection point and make a best guess for the point of intersection. After that, the calculator will display the x- and y-values of the intersection of the curves.
