Solve the following systems of linear equations: 3x - y = 5 and 2x + y = 5 using elimination. Verify your answer. *

Step-by-step explanation:

3x-y=5

2x+y=5

Eliminate the ys (-y and y)

Add the rest of the equation

5x=5

Divide by 5

x=1

Plug 1 wherever u see x

Use any one of the equations

3(1)-y=5

3-y=5

Subtract 3 from both sides

-y=2

Divide by -1

y=-2

Check: 3(1)-(-2)=5

3+2=5

5=5

gregory's graph is incorrect because it shows 2 inches of growth for each week when it should show 0.75 inches of growth each week.

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2