SOLUTION: For what values of m would the graph of y=mx^2 + 4x + 6 lie entirely above the x-axis?

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Question 727342: For what values of m would the graph of y=mx^2 + 4x + 6 lie entirely above the x-axis?
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
You want the discriminant to be negative so that the two roots for y=0 are complex, containing an imaginary component.

y=mx%5E2+%2B+4x+%2B+6
highlight%284%5E2-4%2Am%2A6%3C0%29, find m.