Anybody good at math?

1) 2x + 8y = 20

y=2

2x+8y=20; y=2

Solution:

{x, y} = {2,2}

System of Linear Equations entered:

[1] 2x + 8y = 20

[2] y = 2

Graphic Representation of the Equations:

8y + 2x = 20 y = 2

Solve by Substitution:

/ / Solve equation [2] for the variable y

[2] y = 2

/ / Plug this in for variable y in equation [1]

[1] 2x + 8• (2) = 20

[1] 2x = 4

/ / Solve equation [1] for the variable x

[1] 2x = 4

[1] x = 2

/ / By now we know this much:

x = 2

y = 2

We are done

Solution:

{x, y} = {2,2}