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Doubling the dimensions of a rectangle increases the area by a factor of 4.. If p represents doubling the dimensions of a rectangle and q represents the area increasing by a factor of 4, which are true?

Select two options.
a) p → q represents the original conditional statement.
b) ~p→~q represents the inverse of the original conditional statement.
c) q → p represents the original conditional statement.
d) ~q → ~p represents the converse of the original conditional statement.
e) p → ~q represents the contrapositive of the original conditional statement..

User Sangwoo
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1 Answer

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Final answer:

The original conditional statement, represented as 'if the dimensions of a rectangle are doubled, then the area increases by a factor of four' is symbolically p → q, making option a) correct. The inverse, which is '~p → ~q', states that if the dimensions are not doubled, the area doesn't increase by a factor of four, making option b) correct.

Step-by-step explanation:

The question revolves around understanding the logical propositions related to the geometric statement that doubling the dimensions of a rectangle increases the area by a factor of four. The original conditional statement is "if the dimensions of a rectangle are doubled (p), then the area increases by a factor of four (q)". This can be represented symbolically as p → q.

The inverse of the original statement would negate both the hypothesis and the conclusion, leading to "if the dimensions of a rectangle are not doubled (~p), then the area does not increase by a factor of four (~q)". Symbolically, this is represented as ~p → ~q, which is option b). The converse of the original statement switches the hypothesis and conclusion, leading to "if the area of a rectangle increase by a factor of four (q), then the dimensions of the rectangle were doubled (p)". This is represented as q → p, but this is not the original conditional statement; it's the converse.

The contrapositive of the original statement negates and switches the hypothesis and conclusion, resulting in "if the area of a rectangle does not increase by a factor of four (~q), then the dimensions were not doubled (~p)". Symbolically, this is represented as ~q → ~p, which is not mentioned as an option in the question. Hence, the correct options that represent the original conditional statement and its inverse are options a) and b) respectively.

User TheBear
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