The Grammar and Language of Algebra

Variables, Algebraic Thinking, and Algebraic Language

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QUESTION OF

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Views #: 247
Questions #: 20
Time: 10 minutes
Pass Score: 80.0%
Style
Mode

How to represent the unknown?

1 pts
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In algebra, a letter such as x usually represents a (1).

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variable
constant
fraction
prime
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Translate Algebraic Statement

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The phrase 'five more than x' is written algebraically as:

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Algebraic Thinking

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Select all statements that correctly describe algebra.

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Expression Translation

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Translate 'twice a number y' into algebraic notation.

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Identify Algebraic Expression

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Which of the following is an algebraic expression?

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Sort Algebraic Forms

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Please drag and drop the options to sort them

Arrange the following from simplest symbolic form to more complex symbolic form.

Equation
Variable
Expression
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Match Words to Algebra

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  1. Click on an item in the first group
  2. Click on an item in the second group
  3. To delete a match, double click on a line

Phrase

Seven less than x
Three times x

Algebric form

3x
x-7

Match the phrase with the correct algebraic form.

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Algebra as Shorthand

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Algebra acts as the (1) of mathematics.

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language
drawing
graph
table
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Classification of Statements

2 pts
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Mathematical Statements
×x+5
×2y=10
×7a-3
×m+1=4
Expression
Equation

Classify the following into expressions or equations.

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Meaning of Equality

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The symbol '=' means two quantities are:

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Definition of a Polynomial

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Which of the following expressions qualifies as a polynomial in \(x\)?

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Degree of a Polynomial

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What is the degree of the polynomial \(3x^5 + 2x^3 - x + 7\)?

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Remainder Theorem

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According to the Remainder Theorem, if a polynomial \(p(x)\) is divided by \((x - a)\), the remainder is:

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Factor Theorem

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According to the Factor Theorem, if \(x = a\) is a zero of polynomial \(p(x)\), then:

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Algebra as a Language for Thinking

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Consider the arithmetic pattern below:

\(3^2\) is 1 bigger than \(2 \times 4\)

\(4^2\) is 1 bigger than \(3 \times 5\)

\(5^2\) is 1 bigger than \(4 \times 6\)

Which algebraic identity correctly generalises this pattern for any natural number \(n\)?

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Algebra Shorthand: Translate to Algebra

2 pts
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To complete the line match
  1. Click on an item in the first group
  2. Click on an item in the second group
  3. To delete a match, double click on a line

Ordinary Language

Think of a number, add 7 to it and double the result
Choose a number, multiply it by 5, add 2, square this expression, and divide the result by 8
Take a number, subtract 3 from it, then multiply by 4
Square a number and add twice the number

Algebraic Form

\(2(x + 7)\)
\(\frac{(5x+2)^2}{8}\)
\(x^2 + 2x\)
\(4(x - 3)\)

Match each instruction in ordinary language to its equivalent algebraic expression.

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Induction vs. Deduction

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In mathematics, the process of reasoning from particular results to a general conclusion is called:

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Counter-Example to Fermat's Conjecture

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Pierre de Fermat conjectured that \(2^{2^n} + 1\) is prime for every natural number \(n\). Which mathematician disproved this conjecture, and for which value of \(n\)?

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Zeros of a Quadratic Polynomial

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Consider the polynomial \(q(x) = x^2 - x - 6\).

Which of the following are zeros of \(q(x)\)? (Select all that apply.)

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Maximum Zeros of a Polynomial

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Please drag and drop the options to sort them

Sort the following polynomial types in ascending order based on the maximum number of zeros they can have.

Quartic (degree 4)
Linear (degree 1)
Cubic (degree 3)
Quadratic (degree 2)
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