Posted by CheezyReezy on Thursday, June 9, 2011 at 12:46pm.
F(x)= Y = X^2 - 6X - 2.
X-Intercepts = The solution = The points where the graph crosses the X-axis.
Use the Quadratic formula to solve the
Eq:
X = (6 +- sqrt((-6)^2+4*1*2)) / 2,
X = (6 +- sqrt(36+8)) / 2,
X = (6 +- 6.632) / 2,
X = (6 + 6.632) / 2 = 6.316.
X = (6 - 6.632) / 2 = -0.-0.316.
Solution set: X = 6.316, and -0.316 =
X-Intercepts
In the given Eq, substitute 0 for X:
Y = 0^2 - 6*0 - 2 = -2 = Y-Int.
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