Question

Which of the following ordered pairs is included in the solution set of the system, y < 2 - 2x and y > 2x -3?


(4, 0)

(0, 0)

No Solution


(3, 4)




2. Choose all correct answers. Which of the following are solutions of the system?
x < 3 and x + y < 5


(2, 2)

(4, 2)

(2, -1)

(-1, 0)



3. Which one of the following is a solution of the system?
y <-1 and y > 8


(6, 9)

No Solution

(-2, 4)

(0, 0)


4. Which ordered pair does not satisfy the system 2x + y > 0 and -2x - y > -8?


(-1, 4)

(-1, -1)

(3, -2)

(2, 3)

Answer 1

well, just check all the choices against the equations. For #1,
y < 2 - 2x
y > 2x -3

(4, 0)
0 < 2 - 8? No

(0, 0)
0 < 2 - 0? yes
0 > 0 - 3? yes

(3, 4)
4 < 2 - 6? No

do the others in like wise.