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数学
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SAT数学题
A line has parametric equationsx=5+t and y=7+t,where t is the parameter.the slope of the line is?
人气:407 ℃ 时间:2020-06-25 18:33:16
解答
一条线有一组参数方程定义,x=5+t,y=7+t,t是参数.斜率是多少?
x=5+t=7+t-2=y-2
所以x=y-2,即便y=x+2
斜率k=1.
07年12月1日刚考完SAT.
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