i am having trouble with these problems

Question

Can some one help me with these

solving systems of two variable equations

using the graphing technique

 

problem 1    y=3x

 

problem  2    y =x+2

 

problem 3        x  – y=10

Answer 1

 Easiest way to graph is find the intercepts and connect and extend:

 

  Y =3x

 

   ( 0.0) is one point ( 1.3) another graph

 

   Y= X+2

 

  (0.2)  ( -2, 0)

     X - Y =10

   ( 0,-10) , (10,0 )