Question

How do you write the word phrases into algebraic expressions: The number of students interested is twice last year’s group?

Answer 1

Assign the groups a variable, then compare to get `y=2x`

Explanation:

Assign each group a variable:

Last year's group: `x`
Students interested this year: `y`

We're comparing a set number, `y`, to whatever `twice` of last year's group is.

We'd want to multiply last year, `x`, by `2`, to get `2x`.

Because we know these numbers are equal, we can then set them equal to each other.

`y=2x`