Question

determine by graphical method whether the 2x-5y+4=0and 2x+y-8=0 linear equations has a unique solution or not​

Answer 1

Step-by-step explanation:

a1=2. b1=-5

a2=2. b2=1

a1/a2not equal to b1/b2

so,the equation has unique solution

Answer 2

Answer:

Linear equations has a unique solution.

Step-by-step explanation:

Given :

2 x - 5 y + 4 = 0  and  2 x + y - 8 = 0

We have check whether given equation has unique solution or not​.

We know formula for unique solution.

$\large \dfrac{a_1}{a_2}\neq \dfrac{b_1}{b_2}$

Comparing values fromgiven equation we have

$\large a_1 =2,\ a_2 =2,\ b_1=-5 \ and \ b_2=1$

putting these values in formula

$\large \dfrac{2}{2}\neq \dfrac{-5}{1} \\\\\\\large 1\neq 5$

Hence condition is satisfied so it has a unique solution.