I’ll rate brainliest pls help with geometry

Find the slope of the line that passes through the points (-3, -1) and (0, 3). 3/4 0 4/3

Can someone tell me if these are correct?

Maria has $10,000 to invest in two accounts.he decides to invest one part in an account with 5% interest and the rest in an account with 8% interest. at the end of the year he has earned $702,50 in interest.¿how much did maria invest in the 8% account?