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Introduction to Euclid's Geometry
Question
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Draw the graph of each of the following linear equations in two variables:

x – y = 2

Answer

x – y = 2
x – y = 2
⇒ y = x – 2
Table of solutions

X

2

3

y

0

1

We plot the points (2, 0) and (3, 1) on the graph paper and join the same by a ruler to get the line which is the graph of the equation x – y = 2.

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Some More Questions From Introduction to Euclid's Geometry Chapter

 Express the following statement as a linear equation in two variables by taking present ages (in years) of father and son as x and y, respectively. Age of father 5 years ago was two years more than 7 times the age of his son at that time.

Write the equation 2x = y in the form ax + by + c = 0 and find the values of a, b, c in the equation. How many solution this equation has?