Casio fx-CG10 PRIZM Quick Reference Manual page 9

GRAPH
7. Determine the price of each t-shirt in order to collect $150.
()
To determine the price of each t-shirt, in order to collect a total of $150, press
Ly(G-Solv)u w
()
(X-CAL)150l. (The symbol moves to the next page of commands.)
There is another point where y = 150. Use to move to the next point. Press to mark one or both of these
$ l
points. $150 can be earned by selling shirts at $5 or at $15.
8. Find the intersection of the equations in Y1 and Y2.
Although it is not particularly meaningful in this example, a common problem is to find the intersection point of two
graphs. Press to return to the editor. Highlight Y1 and press q(SELECT). Now, both graphs will be drawn.
d
Press u(DRAW). To find the intersection points for the two graphs, press y(G-Solv)y(INTSECT). 38 shirts
are sold at the price of $1, for a total of $38. (These graphs also intersect at (20, 0) where no shirts were sold.)
Getting Started with the fx-CG10
9