To sketch: the graph of the parabola
Given:
The equation of a parabola:
Graph:
The general form of the equation of a parabola that has the vertex
Observe that the equation
Thus,
Plot the vertex
Since the parabola has the vertex
Now, find few points on the parabola for the purpose of drawing it accurately.
For that purpose, substitute
Thus, the points
Similarly, it may be observed that the points
Plot the points
Then, join the points plotted previously and the vertex of the parabola using a smooth curve to obtain the graph of the parabola as shown below:
Chapter 8 Solutions
PRECALCULUS:GRAPHICAL,...-NASTA ED.
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