Two parallel lines are crossed by a transversal. What is the value of y?
y=40
y=80
y=100
y=120

The system of equations graphed below has how many solutions? y = 2x + 2

How is working backward similar to solving an equation?

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?