Complete sentence. The comma is used the right way so it wouldnt be a comma splice, and if you replaced the comma with a period it would be wrong, so not a run on. That is why it is a complete sentence
Answer:
Hello Dear (Fill name here),
I hope you have been having a lovely year, I was wondering if you would want to go to a party tonight. It's dads 10th anniversary and you are welcome to join! We will have all of your favorites, cakes, cookies, cupcakes, lobster, cheese, ham sandwiches and many more. I hope to see you there!
Explanation:
You want the slope intercept equation.