Which system of equations below has infinitely many solutions? a) y = –3x + 4 and y = –3x – 4 b) y = –3x + 4 and 3y = –9x + 12 c) y = –3x + 4 and y = -1/3+ 4 d) y = –3x + 4 and y = –6x + 8

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

An airport in death valley is 60 feet below sea level, and an airplane is flying 2,000 feet above sea level. how many feet must the plane descend in order to land? a. 2060 b. 2000 feet c. 1940 feet d. 1880 feet e.1400 feet will mark as brainliest

Give me the equations of two lines that have the same slope but are not parallel.