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

1 Answer
Sep 14, 2017

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