Question

State what method you are using to solve the system. Then solve the system. Show all steps of your work, clearly state your answer as a coordinate pair, and check it. 1. Y = −3x 4x + y = 2 2. Y = 7x − 5 2x + y = 13 3. X = −5y − 4 x − 4y = 23 4. −4x + 6y = −20 2x − 3y = 10 5. 3x − y = 1 −2x + y = 2 6. Y = − 3x y = 7 + 4x

Answer 1

Answer:

The method used is substitution method

x = 2, y = -6

Step-by-step explanation:

Given the simultaneous equation

Y = −3x .....  1

4x + y = 2 ... 2

Substitute equation 1 into 2

4x + (-3x) = 2

4x - 3x = 2

x = 2

Get y:

y = -3x

y = -3(2)

y = -6

Hence the value of (x, y) is (2, -6)