Please help me anyone in 6th grade or higher whoever did this i will give you the brainliest if you help

When only separate discreet points are graphed it is called?

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers