Can someone help me with this. Will Mark brainliest. Need answer and explanation/work.

Find the equation using the point (4,8)

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap