Start with a set of axes:



substitute 

x = 1 

into that equation

y = (1) + 5
y = 1 + 5
y = 6

Write the ordered pair (x,y) = (1,6)

Plot that ordered by drawing a vertical green line 
through 1 on the x axis (since x=1) and a red line 
through 6 on the y-axis (since y=6), like this:



Mark the point where they cross, and label it 




Now erase the green and red lines.




----

substitute 

x = -2 

into that equation

y = (-2) + 5
y = -2 + 5
y = 3

Write the ordered pair (x,y) = (-2,3)

Plot that ordered by drawing a vertical green line 
through -2 on the x axis (since x=-2) and a red line 
through 3 on the y-axis (since y=3), like this:

 

Mark the point where they cross, and label it 




Now erase the green and red lines.




Now draw a blue line through both those points:



That blue line is the graph of the equation .  Notice that the
values I picked for x, 1 and -2 were completely arbitrary!  Picking any 
value of x will do, You will get different points, but they will always fall
right on that same blue line.  The other tutor picked 0 and -5, and (0,5) and
(-5,0) are also on this line.

Edwin