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Pure Mathematics
 Online Tutoring : Quiz : Pure Mathematics
What is the equation of line m? Check your score
  Play           Question 5 of 58 in this category.    

In the xy-coordinate plane shown, line k contains the points (0,0) and (1,2). If line m (not shown) contains the point (0,0) and is perpendicular to k what is the equation of line m?
 
A.
y = -
x
2
 + 1 
 
B.
y = -
x
2
 
 
C.
y = -x + 1
 
D.
y = -x
 

 
  * Quiz question created by Tutor11668 on 31 October 2005 at 5:49pm

 
 
 
 
 
 

 




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In the xy-coordinate plane shown...


show how

y=mx+c
(2-0)=m(1-0)+0
2=m
m is perpendicular to k so m1m2=-1
m1=2 so (2)m2=-1
m2=-1/2
insert m in the equation y=mx+c
y=(-1/2)x+c
because its perpendicular to k so the c is 0 hence
y=(-1/2)x
y=-x/2


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