Cave: cavern: song: tune what is the word relationship

Sub heading - main heading analogy

Explanation:

An analogy shows the relationship between two things at some point of similarity. The given analogy can be referred to the sub-heading-main heading analogy. In the given example, cave is a smaller section of a cavern and a song is a smaller part of a tune. Therefore, one is the bigger part and the other is the smaller part.

i think the life is invaluable.

you can also say immeasurable.

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4