Solve x^2 + 6x -16 >= 0 using a graphing calculator and show me how to do that
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Solve x^2 + 6x -16 >= 0 using a graphing calculator and show me how to do that

[From: ] [author: ] [Date: 11-09-07] [Hit: ]
You should find the x-intercepts are -8 and 2 and that the function is a parabola opening upwards.x ≤ -8 or x ≥ 2.......
I don't know the calculator you are using, but you would want to graph y = x^2 + 6x - 16 and find the x-intercepts.

Your solution are the values of x for which the function is positive, that is, above the x-axis.

You should find the x-intercepts are -8 and 2 and that the function is a parabola opening upwards. This gives a solution of

x ≤ -8 or x ≥ 2.
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