Question

Consider that x = −9 and y = −6. Which statement is true about x + y?

A) The sum of x and y is a rational number.
B) The sum of x and y is an imaginary number.
C) The sum of x and y is an irrational number.
D) The sum of x and y is neither rational nor irrational.

Answer 1

A

Explanation:

-9 -6 = -15.

-15 is rational.

Answer 2

Answer: A) The sum of x and y is a rational number.

Explanation:

A rational number is a number that can be expressed as a fraction , that is , it can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number

since x = -9 and y = -6

x + y = -9 + -6

x + y = -15

-15 can be written as -15/1 , this shows that it is a rational number.

Note : Irrational numbers can not be expressed as fraction ,example is
`√(2)` ,
`\pi` and so on

Also , Imaginary number is a complex number