Solve the linear system by graphing. Check your solution.
13. y= -x +4
y = 2x - 8
please help I would appreciate it^.^ Explain every detail of how to do this so Ican do this for other equations.

Question

Solve the linear system by graphing. Check your solution. 
13. y= -x +4
     y = 2x - 8
please help I would appreciate it^.^ Explain every detail of how to do this so  Ican do this for other equations.

anonymous · Answer

$$y=-x+4[1]$$
$$y=2x-8[2]$$
Sub in the RHS of equation [1] into y.
If you don't understand how you can do that, well in the first equation, the equation states that y equals -x+4. In other words, y can be written as "-x+4" (without the quotation marks)
So the second equation will become this:
$$-x+4=2x-8$$
Collect like terms. That means gather the terms that look "alike".
$$4+8=2x+x$$
$$3x=12$$
$$x=4$$
You can find y by substituting that x-value into ONE of the two equations you were given in the question.

anonymous · Answer

Can you just explain the whole thing pz

anonymous · Answer

Oh the question says grraphing. Graph the lines and show me your diagram.

anonymous · Answer

graphing*

anonymous · Answer

So, draw the two lines above on one number plane.

anonymous · Answer

:p

anonymous · Answer

Just show me how to do it and I will know how to do it for the rest of it. Please because I need to sleep and its 1:15 AM

anonymous · Answer

Give me each step and explaination

anonymous · Answer

THat's your very first step....sketch the two lines above.

anonymous · Answer

I'm not even skipping any steps. I'm telling you to sketch it which you should be able to if you're attempting these types of questions.