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# Functions and Graph of linear fucntion!

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1. This was the on my text book and I do not get it.

Table of values: Number of squares x : 1 / 2 / 3 / 4 /5
Number of matchsticks y : 3/ 5/ 7 / 9 /11

y EQUALS 2x+1

It says that x was the number of match sicks , so x could take only a whole number values. You cannot join the points on a graph of this function because there are no values of x and y between those points.

What does that paragraph mean
2. (Original post by ShikaMekiFuka)
This was the on my text book and I do not get it.

Table of values: Number of squares x : 1 / 2 / 3 / 4 /5
Number of matchsticks y : 3/ 5/ 7 / 9 /11

y EQUALS 2x+1

It says that x was the number of match sicks , so x could take only a whole number values. You cannot join the points on a graph of this function because there are no values of x and y between those points.

What does that paragraph mean
Which part of the paragraph in particular / what's your interpretation of it?
3. The data is discrete. This basically means that the graph of y=2x+1 will only exist at positive integer values of x and y. So x cannot be 1/2, or 10.5, or because y can only be a positive integer, because you can only have a whole number of matchsticks right?

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