How do you know when to add in a problem?

Ill mark the brainliest if you me with the these three questions 7,8,9

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min. if they did not stop driving, how many miles could kyle and elijah drove in a whole day? ? 1 day = 24 hours. plzzz write a proportion i will give you 100 points