Question

Šchool1ssab1tch asks a question,

Solve the system of linear equations by substitution. Check your solution.


10. y = x − 4
y = 4x − 10

Answer 1

Answer :

$y = x - 4 \\ y = 4x - 10$

So,

$x - 4 = 4x - 10 \\ \\ x - 4x = - 10 + 4 \\ \\ - 3x = - 6 \\ \\ x = \frac{6}{3} = 2$

Put the value of x in (i)

$y = x - 4 \\ \\ y = 2 - 4 \\ \\ y = - 2$

Therefore, x = 2, y = - 2