Question

Wanda has $640 in her checking account. she pays her landlord $75 per week for rent.

which function best models the linear relationship?


y = 640x 75

y = −75x 640

y = −75x − 640

y = 75x 640

Answer 1

The answer is y = 640 - 75x
As her balance starts at a fixed point ( 640)
and decrease every x weeks by 75
Hope it helps

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Answer 2

Option B is correct

`y = -75x+640`

Explanation:

The equation of line is given by:

`y=mx+b`

where, m is the rate or slope and b is the initial amount.

As per the statement:

Wanda has $640 in her checking account.

She pays her landlord $75 per week for rent.

Assume that the number of weeks be x.

Let us assume that the y represented the money in the account after x weeks.

then;

the function becomes,

`y = 640-7x`

or

`y = -75x+640`

Therefore, the function best models the linear relationship is,
`y = -75x+640`