Question

Solve the system of equations. 5x + y = 9 3x + 2y = 4 (−2, 5) (1, 4) (2, −1) (4, −4)

Answer 1

Step-by-step explanation:

EQ. 1

5x + y = 9

5x = 9-y

x = 9-y/5

EQ. 2

3x + 2y = 4

3*(9-y)/5 + 2y = 4

(27 - 3y )/5 + 2y/1 = 4

( 27 - 3y + 10y ) / 5 = 4

27 + 7y = 5*4

7y = 20 - 27

y = -7/7

y = -1

EQ. 1 se

5x + (-1) = 9

5x = 9+1

x = 10/5

x = 2

Answer - ( 2, - 1 )