Question 254836
you have y=3x-10 as one line 
to graph it just find the intercepts or any two points 
since to draw a line we need two points 

so x intercept (put y=0) is 10/3
   y intercept (put x=0) is -10

now the points are (10/3,0) and (0,-10)

now draw the line

similarly draw the other line both will intersect at a point that will give the values of x and y