Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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 
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 D

Question 3

S

Accepted Answer

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

Question 4

Solve

Accepted Answer

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

Question 5

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

Accepted Answer

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 
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 6

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

Accepted Answer

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

Question 7

Solve 4x + 2 = 0

Accepted Answer

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

Question 8

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

Accepted Answer

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

Question 9

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

Accepted Answer

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

Question 10

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

Accepted Answer

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

Exam 25: Linear Equations

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

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

Solve

Solve

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

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

Solve 4x + 2 = 0

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

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

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

Introduction to Business Mathematics and Statistics

Sampling and Data Collection

Data and Their Accuracy

Frequency Distributions and Charts

General Charts and Graphs

Arithmetic Mean

Median

Mode and Other Measures of Location

Measures of Dispersion and Skewness

Standard Deviation

Quantiles and the Quartile Deviation

Linear Functions and Graphs

Regression Techniques

Correlation Techniques

Time Series Model

Time Series Trend

Seasonal Variation and Forecasting

Index Relatives

Composite Index Numbers

Special Published Indices

Interest and Depreciation

Present Value and Investment Appraisal

Annuities

Functions and Graphs

Quadratic and Cubic Equations

Differentiation and Integration

Cost, Revenue and Profit Functions

Set Theory and Enumeration

Introduction to Probability

Conditional Probability and Expectation

Combinations and Permutations

Binomial and Poisson Distributions

Normal Distribution

Linear Inequalities

Matrices

Inventory Control

Network Planning and Analysis

Filters