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vampirchik [111]
3 years ago
8

You have $30 dollars saved up. Every week you spend $6 at the arcade. Write an equation in slope intercept form that shows how m

uch money you have (y) after x weeks.
Mathematics
1 answer:
Colt1911 [192]3 years ago
7 0

Answer:

y = -6x + 30

Step-by-step explanation:

The inicial value you have is $30, so this will be the value of y after 0 weeks, that is, x = 0

After one week, you spend $6, so you will have y = 30 - 6 = 24 when x = 1.

With these pair of values, we can find the linear equation:

y = ax + b

for x = 0, y = 30:

30 = a*0 + b

b = 30

for x = 1, y = 24:

24 = a*1 + 30

a = 24 - 30 = -6

So, our equation is:

y = -6x + 30

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