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Mathematics 10 Online
OpenStudy (dmezzullo):

Choose the correct description of the graph of the inequality -2x greater than or equal to 10. Open circle on -5, shading to the left. Closed circle on -5, shading to the left. Open circle on -5, shading to the right. Closed circle on -5, shading to the right.

OpenStudy (ryan123345):

Well first you have to get x alone by dividing a negative 2 on both sides which switches the signs

OpenStudy (ryan123345):

so you get \[x \le-5\]

OpenStudy (ryan123345):

no. you switch the sign because you divided by a Negative number

OpenStudy (dmezzullo):

yes thats correct

OpenStudy (ryan123345):

lol Luis xD

OpenStudy (dmezzullo):

So B

OpenStudy (ryan123345):

so automatically since you know that its not only less than but also equal to thats means you put a solid dot.

OpenStudy (dmezzullo):

yes

OpenStudy (ryan123345):

so you can eliminate A and C

OpenStudy (ryan123345):

so now a little trick is that the way the inequality sign is pointing is the way you shade in the line

OpenStudy (dmezzullo):

U go to the left

OpenStudy (ryan123345):

good job :)

OpenStudy (dmezzullo):

tyvm

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