SOLUTION: discuss the effect of the sign of the coefficient a on the graph of y = ax2 + bx + c. Please include two examples of graphs to support your thoughts, one where a < 0 and one where

Algebra ->  Linear-equations -> SOLUTION: discuss the effect of the sign of the coefficient a on the graph of y = ax2 + bx + c. Please include two examples of graphs to support your thoughts, one where a < 0 and one where      Log On


   

Question 334024: discuss the effect of the sign of the coefficient a on the graph of y = ax2 + bx + c. Please include two examples of graphs to support your thoughts, one where a < 0 and one where a > 0
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Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
If a%3E0 the parabola opens upwards and if a%3C0 the parabola opens downwards.
Here are two functions,
f%28x%29=x%5E2%2B2x%2B5 and g%28x%29=-x%5E2%2B2x%2B5
.
.
.
graph%28300%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2%2B2x%2B5%2C-x%5E2%2B2x%2B5%29