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

Answer:

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#