How do we solve quadratic equations by graphing?
All Classes
Today we worked on three problems that will be evaluated as a quiz.
For each problem, you had to
- Find the axis of symmetry
Find the vertex - State whether it was a maximum or minimum point
- Make a table of values, with the vertex in the middle
- plot the graph.
- State the roots, if possible.
The three problems were
- y = x2 + 2x - 3 = 0
- y = -x2 + 4x + 4
- y = x2 - 3x - 4
extra credit: y = x2 + 8x + 5
You should know all the formulas needed for this task.
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