Question

Show that the following system has unique solution : x – 2y = 2 and
4x – 2y = 5

Answer 1

$x-2y=2\\4x-2y=5\\\\\frac{a_1}{a_2}=\frac{1}{4}$

$\frac{b_1}{b_2}=\frac{2}{2}\\ \\\frac{b_1}{b_2}=\frac{1}{1}$

$Here,\\\frac{a_1}{a_2}\neq \frac{b_1}{b_2}$

Hence, the following system has unique solution.

Answer 2

Step-by-step explanation:

4x-x+2y_2y=5+2

4+7

=11