Solve the inequality 20-3y > y+4

I am not sure of my workings but here it is:






Therefore,

Also, how do I illustrate the answer on a number line? Not quite sure what they are asking for

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Originally Posted by FailInMaths

I am not sure of my workings but here it is:






...

Also, how do I illustrate the answer on a number line? Not quite sure what they are asking for

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The above is how it should read. Why did you switch to "=" ?
To graph y < 4
Mark "4" on a number line. Either circle it, or put a " ) " right parenthesis there, and then shade/draw a line to the left (where "lesser" numbrs are)

so the solutions are the elements of .


Edited: Sorry, I didn't see TheChaz's post.

Quote:

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Originally Posted by TheChaz

The above is how it should read. Why did you switch to "=" ?
To graph y < 4
Mark "4" on a number line. Either circle it, or put a " ) " right parenthesis there, and then shade/draw a line to the left (where "lesser" numbrs are)

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Oh, I get it now, thanks!

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Originally Posted by FernandoRevilla

so the solutions are the elements of .


Edited: Sorry, I didn't see TheChaz's post.

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No need for apologies, especially since you included the solution in interval notiation!