Simple linear equation

Error

There was an error loading the page.

Contributors

Lois Rollings

History

○

Lois Rollings 8 years, 9 months ago

Published this.

○

Lois Rollings 10 years, 9 months ago

Created this.

Name	Status	Author	Last Modified
Simple linear equation	draft	Lois Rollings	28/07/2016 12:12
Ioannis's copy of Simple linear equation	draft	Ioannis Lignos	09/10/2018 22:21

Question statement

Solve the following equation to find the value of $n$ .

Give any introductory information the student needs.

			Name	Type	Generated Value

a	integer	2
c	integer	8
b	integer	3
s	integer	-1
fromto	string	to
op	string	add

Automatically regenerate variables?

Name

Data type

Value

A random number between and (inclusive) with step size

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `integer`

This variable doesn't seem to be used anywhere.

Parts

Gap-fill
1. Gap Number entry
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

If $\simplify{{n}/{a} + {s}* {b} = {c}}$ , enter the value of $n$ in the space below.

$n=$ Unnamed gap

Advice

Remember that you need to treat both sides of the equation in exactly the same way.

Given $\simplify {n/{a} + {s}*{b} = {c} }$ ,

your first step could be to $\var{op} \ \ \var{b}$ $\ \ \var{fromto}$ both sides, giving you $\simplify { n/{a} = {c} - {s}*{b}}$ .

Then multiplying both sides by $\var{a}$ will give $\simplify{ n= {a}*({c}-{s}*{b})}$ .

If you decide to multiply by $\var{a}$ first, you need to be careful to multiply all of the terms by $\var{a}$ giving

$\simplify{ n +{s}*{b}*{a} = {c}*{a}}$ .

For some general advice on solving equations see http://www.mathsisfun.com/algebra/equations-solving.html

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet

This question is used in the following exams:

Loading...

Error

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Lois Rollings 8 years, 9 months ago

Lois Rollings 10 years, 9 months ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

Loading...

Error

Simple linear equation

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Lois Rollings 8 years, 9 months ago

Lois Rollings 10 years, 9 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`