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Graphs

by bburton11 » Wed Jun 10, 2009 5:29 am
In the xy-plane, line k has positive slope and x-intercept 4. If the area of the triangle formed by line k and the two axes is 12, what is the y-intercept of line k?

Answer: -6
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by tohellandback » Wed Jun 10, 2009 5:39 am
area=1/2*4*y=12
y=6

take 6 in the negative direction. the y-intercept will be -6
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The powers of two are bloody impolite!!
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