book Maths Puzzle Numerical Ability

How do you plot a linear graph with the equation of "y=x+2"?

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book Other Question

A math teacher is randomly distributing 15 rulers with centimeter laables and 10 rulers without centimeter labels. What is the probability that the first ruler she hands out will have centimeter labels and the second ruler will not have labels? Dealing with contradictions: Is is possible to draw a triangle in which the sum of any two angles is less than 120 degrees.