Question

Question 7

Solve the system of equations.

5x + y = 9
3x + 2y = 4

a) (−2, 5)

b) (1, 4)

c) (2, −1)

d) (4, −4)

Answer 1

Answer:

hey bro answe is (c) (2, -1)

Answer 2

Answer:

(c). (2, - 1)

Step-by-step explanation:

5x + y = 9 ⇒ y = 9 - 5x

3x + 2y = 4

3x + 2(9 - 5x) = 4

3x + 18 - 10x = 4

7x = 14

x = 2

y = 9 - 5(2) = - 1

(2, - 1)

Check the answer:

5(2) + (- 1) = 9

9 = 9

3(2) + 2(- 1) = 4

4 = 4