Four more than the quotient of 30 and a number

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

Line ab contains points a(4, 5) and b(9.7). what is the slope of ab?