Deck 25: Linear Equations

Question 1

Solve 4x + 2 = 0

A) x = -1
B) x = -0.5
C) x = 0
D) x = 0.5

Answer 1

x = 0.5

Question 2

Which of the equations below are NOT equivalent to x = 4?

A) 2x = 8
B) = 2
C) x + 3 = 4 - x
D) 3x - 6 = 6

Answer 2

x + 3 = 4 - x

Question 3

Solve

A) 3
B) 4
C) 5
D) 6

Answer 3

5

Question 4

Find a solution for y when 2x - 2y = -6 and 2x + 4y = 30

A) 6
B) -6
C) 3
D) -3

Question 5

Solve this set of 3x3 simultaneous equations for the value of y: 2y + x - 3z = -5; -4y - 2x +3z = -2; y + 2x + 2z = 16

A) 1
B) 2
C) 3
D) 4

Question 6

If a linear equation such as 4x + 2 = 8 is plotted graphically, which of the following features represents the solution?

A) Where the line crosses the vertical (y) axis
B) Where the line crosses the horizontal (x) axis
C) The gradient of the line
D) It is not possible to determine the solution in this way

Question 7

Solve

A) 2
B) 3
C) 4
D) 5

Question 8

Find a solution for y when 6y + 6x = 66 and 2y = 6x - 34

A) 2
B) 4
C) 6
D) 8

Question 9

Which of the following equations does NOT have a single, unique, solution?

A) 2x + 4 = 18
B) = 6x - 3
C) 4x + 2 = 3x + 6
D) y = 2x - 4

Question 10

When solving a 2x2 simultaneous equation graphically, which of the following solutions represents the solution?

A) The difference between the points where the lines cross the vertical (y) axis
B) The difference between the points where the lines cross the horizontal (x) axis
C) The difference between the gradients of the two lines
D) The point at which the two lines intersect (cross) each other