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Highway engineers design a parabolic curve for an entrance ramp from a straight street to an interstate highway. The vertex of the curve passes through (0, 0) and the parabola passes through (1000, + 800). Find an equation for the parabola.
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just do the same as we did in the previous problem... find a in y = ax^2 when you plug in those x,y coordinates...
lemme know what u got for a....
ok, i will give it a try
my formula is 800=a(1000)^2, but i couldn't figure out what a would be
ok that is the correct way...
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so we have:
|dw:1338078320349:dw| now we can simplify...
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