True or False The point (-2, -1) is a solution to the inequality – y < 0. True False
1 answer:
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The first one can be done by Pythagoras theorem such as 
then 
then 
The second one can also done by Pythagoras theorem, note that this is isosceles triangle so
, again by using Pythagoras theorem 
then 
then 
For the last one can also done by property of 30-60-90 triangle.
The second one can also done by Pythagoras theorem, note that this is isosceles triangle so
For the last one can also done by property of 30-60-90 triangle.