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1
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- Shannon ML Reohr
- Cayuga Community College
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2
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- Determine how it opens
- Find the y – intercepts
- Find the axis of symmetry
- Find the vertex
- Find the x-intercepts, if any
- Graph the function
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3
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- If a is positive, it opens up
- a > 0
- If a is negative, it opens down
- a < 0
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4
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- Where it crosses the y - axis
- Set x = 0
- Solve for y
- The point is (0,y)
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5
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- Can be used to find extra points
- x = -b/2a
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6
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- Take the x value from the axis of symmetry and substitute it into the
function
- Finds the y value
- Vertex is (x,y)
- Also known as the turning point
- It is the minimum or maximum point of the parabola
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7
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- Where it crosses the x-axis – sometimes there will not be any intercepts
- Set y = 0
- Solve for x
- List the x-intercepts as points (x,0)
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8
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- Be sure to label any y-intercepts, the axis of symmetry, the vertex, and
any x – intercepts.
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Notes
