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Introduction To Euclid's Geometry

Question

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Find the value of k, if x = 2, y = 1 is a solution of the equation 2x + 3y = k. Express y in terms of x and find the value of y when x = –1.

Solution

Solution not provided.
Ans. k = 7; $straight y equals fraction numerator 7 minus 2 straight x over denominator 3 end fraction semicolon space 3$

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?

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