Answer with explanation:
The sum of two distinct variables is 10.
x + y=10
It is linear equation in two variables.
To plot this graph in two dimensional plane find two distinct points satisfying the equation.
x=0, gives , y=10 or , y=0 gives , x=10.
x=1, gives ,y=10 -1,→y=9
So,two ordered pairs lying in the coordinate system are , (0, 10) and (1, 9) or (10,0) and (1,9), you will get the equation of line.
Otherwise , you can Draw the graph of this function by writing the equation in Slope Intercept form which is as:

By writing the slope intercept form of line shows that , the line passes through , (10,0) and (0,10) means cutting x axis and y axis at these two points.