Question

Tatiana starts with $8 in her piggy bank and saves $2 per week. Julian starts with $0 in his piggy bank and saves $4 per week.
A. Write an equation to model how much money Tatiana has in her piggy bank after x weeks.
B. Write an equation to model how much money Julian has in his piggy bank after x weeks.

Answer 1

Answer:

A. y=2x+8

B. y=4x

Step-by-step explanation:

These are both linear equations so use y=mx+b where m is the slope (rate you earn money) and b is the yintercept (starting point).

Tatiana starts at 8 dollars and gains 2 dollars a week so m is 2 and b is 8

Julian starts without any money and gets 4 dollars a week so m is 4 and b is 0