What is an equation of a line which passes through (6,9) and is perpendicular to the line whose equation is 4x-6y=15?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4