How do you graph 8a-10=38 but a=6?

To graph this equation, I am going to change it up so you can understand. a, in this case, is x and 38 would be y (but it is already solved). Therefore the equation is y = 8x - 10. This follows the format y = mx + b.

To graph: Since your x is 6, your y is missing, but since it's already solved it's 38. Your coordinates would (6, 38).