GED Mathematical reasoning 3

Question 1

Which of the following is a solution to the system of equations?
x + y = 7
2x − y = 2

Accepted Answer

(3, 4)

Answer

(2, 5)

Answer

(4, 3)

Answer

(5, 2)

Question 2

Factor the expression: x² − 9

Accepted Answer

(x + 3)(x − 3)

Answer

(x − 3)(x − 3)

Answer

(x + 3)(x + 3)

Answer

(x − 9)(x + 1)

Question 3

The graph of which equation is a parabola opening downward?

Accepted Answer

y = −3x² + 2x − 1

Answer

y = 2x² + 3

Answer

y = x² − 5x

Answer

y = 3x − 4

Question 4

What is the slope of the line passing through the points (−2, 3) and (4, −1)?

Accepted Answer

−2/3

Answer

2/3

Answer

−3/2

Answer

3/2

Question 5

Solve for x: (x/3) + 2 = 5

Accepted Answer

x = 9

Answer

x = 1

Answer

x = 7

Answer

x = 21

Question 6

Which table of values represents a linear function?

Accepted Answer

x: 0,1,2,3 → y: 1,3,5,7

Answer

x: 1,2,3,4 → y: 1,4,9,16

Answer

x: 1,2,3,4 → y: 2,4,8,16

Answer

x: 0,1,2,3 → y: 0,1,4,9