Mx+b=y ? that’s a formula
6/ 2 =3
5/ 5 =1
6 divide by 2 is 3
5 divide by 5 is 1
You have the slope and you have two points, so you can use the slope equation to find x.

So your answer is x = 8.
The answer is 1,000. 500(2)= 1000
Answer:
First get the formula for your pattern in the form of TN. Where d represents your difference and a represents your first term. Then equate the -401 to your formula and solve for n