Question

tanvi is on vacation at guji lake. to keep in touch, she decides to send 3 postcards each day. write an equation that shows the relationship between the number of days tanvi has been on vacation, x, and the total number of postcards she has sent, y. y =

Explanation:

Step1: Identify the rate

She sends 3 post - cards per day.

Step2: Determine the relationship

The total number of post - cards $y$ is the rate (3 post - cards per day) times the number of days $x$. So $y = 3x$.

Answer:

$y = 3x$