Need help! With both, please please help!

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

Were only 64 seats. the remaining 6 students had to travel in a separate van. the equation 2b + 6 = 70 represents the given scenario. what does b represent? the number of buses the number of vans the number of students who rode on each bus the total number of students going to the football game