Question

I need help with there’s problems

Answer 1

3. x = 3, y = 1 --> = (3,1)

4. x = 2, y = 1 --> = (2,1)

Explanation:

3.

x+5y =8

x = 8-5y

-x+2y=-1

-8+5y+2y=-1

7y-8=-1

7y=-1+8

7y=7

Divide 7 from both sides

y = 1

x=8-5y

x=8-5(1)

x = 3

4.

y=x-1

y=-2x+5

-2x+5=x-1

5=x-1+2x

5=3x-1

5+1=3x

6=3x

Divide 3 from both sides

2=x

x=2