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Unregistered
Join Date: Aug 2000
Location: a wretched hive of scum and villainy
Posts: 55,652
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b. CIRCLE radius = 4 center at (1,8)
d. y=x^2 - x =x(x-1)
is a parabola, concave upward, with y-intercept (0,0) and x-intercepts (0,0) and (1,0)
The vertex or bottom of the curve is at (1/2, -1/4).
The axis of symmetry is x=1/2
google is easier than doing math.
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