(Q7).Solve each pair of equations by using the substitution method.

√2x + √3y = 0

√3x – √8y = 0

Given:

√2x + √3y = 0 ……. (1)

√3x – √8y = 0 ……. (2)

Substitute x = in (1),

√2() + √3y = 0

√3y = 0

∴ y =

∴ The solution is x = , y =

Note: a1x + b1y + c1 = 0

a2x + b2y + c2 = 0, if c1 = c2 = 0

then, x = , y = is a solution.