Question 364451
(-2,0) and (0,a). Line LL passes through the points (4,0) and (6,2). 


(-2,0) and (0,a). 

slope m = a-0 / 0-(-2)
m=a/2
Line LL passes through the points (4,0) and (6,2).
slope m = 2-0 / 6-4
m=2/2
m= 1
..
for lines to be parallel the slope have to be equal.
a/2 = 1
a= 2
...
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