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| PAGE: 441 | SET: Exercises | PROBLEM: 74 |
The equation is 
.
Standard form of the vertical parabola is 
.
where vertex is 
.
Focus is 
.
Axis of symmetry 
.
Directrix 
.
The parabola equation 
.
Write the equation in the standard form.
The equation is in the form of .
Because the 
term is squared and 
,the graph opens up.
Use the standard form to determine the characteristics of the parabola.
.
Vertex : 
.
Focus :
.
Directrix:
.
Axis of symmetry : 
.
Graph the vertex, focus, axis of symmetry and directrix.
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Graph :
Graph of .
.gif)
Vertex : .
Focus :
.
Directrix:
.
Axis of symmetry : 
.
Graph :
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