Question

Solve the following system.
x − y = 10
x + y = 4

(−3, 7)

(−7, 3)

(7, 3)

(7, −3)

Answer 1

(7,-3)

Answer 2

add both equations you get x = 7 then plug the 7 in any one of them you get y=-3, so the result would be (7,-3)

Answer 3

Which set of equations would be used to solve this word problem?

An airplane flew 4.5 hours with a 45 mph head wind. The return trip with a tail wind of the same speed took 2.5 hours. Find the speed of the plane in still air.

None of these systems can be used to solve this problem.

d = 7(r + 45)

d = 4.5(r + 45) and d = 2.5(r − 45)

d = 4.5(r − 45) and d = 2.5(r + 45)
@musicfuryu

Answer 4

d = 4.5(r + 45) and d = 2.5(r - 45)

Answer 5

Which point lies in the solution set for the following system of inequalities?

x + 2y > 4
x − y < 6

(1, 1)

(5, −2)

(5, 1)

(7, 0)

Answer 6

@musicfuryu

Answer 7

(5,1)

Answer 8

Can you keep going???

Answer 9

@musicfuryu