Solve the following system of equations by the substitution method. Check the so

Question

Solve the following system of equations by the substitution method. Check the solutions. 2x-y-7 8x-4y = 15 Select the correct choice below and fill in any answer boxes in your choice, if necessary A. There is one solution. The solution set is{ (Type an ordered pair. Simplifty your answer.) O B. There are infinitely many solutions. The solution set is the set of all ordered pairs ((xD where x is any real number (Type an expression using x as the variable. Simplity your answer.) O C. The solution set is the empty set.

Explanation / Answer

Solution:

2x-y =7

=> y = 2x-7 ----(eq1)

putting this value of y in the other equation;

8x-4y = 15

=>8x-4(2x-7) = 15

=> 8x-8x+28 = 15

=> No solution

(C)

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