Which of the following points satisfies the inequality 2x - 3y

Question

Which of the following points satisfies the inequality 2x - 3y < 1?



a.(-2, 1)

b.(1/2, 0)

c.(2, -1)

kamibug · Answer

Just plug them each in and see which one works

harrisonshark · Answer

how

kamibug · Answer

well the options are coordinates. The first number in the paranthesis is x and the second number in the parantheses is y. so just substitute them for those positions in the equation and check if it is true.

kamibug · Answer

do you get it?

harrisonshark · Answer

tell me the answer and explain how you did it so I can know how to do it thats how I learn

kamibug · Answer

okay.

kamibug · Answer

Well the answer is A. 
You can use substitution. 
The equation would be 
2(-2) - (-3)(1) < 1
Then simplify...
-4 + 3 < 1
-1 < 1
That is true. -1 is less than 1. =) Get it now?

harrisonshark · Answer

yep

kamibug · Answer

My bad I made a mistake in the first equation. It is not -3. It is positive 3. But it is still A because the answer is still a negative number and any negative number is less than a positive number.