Casio fx-CG10 PRIZM - Page 9

Getting Started with the fx-CG10
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 l to mark one or both of these
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 nd the intersection point of two
graphs. Press d to return to the editor. Highlight Y1 and press q(SELECT). Now, both graphs will be drawn.
Press u(DRAW). To nd 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.)
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