Question

I just need the Point-Slope Form equation

Answer 1

The point-slope equation formula is
`(y - y_1) = m(x - x_1)`, where
`m` is the slope of the line and
`(x_1, y_1)` is a point on the line.

In our problem, we are adding $200 for each week
`x`, or we are changing each week by +200. This means that our slope
`m`, which is essentially the change of the line, is 200. The problem also gave us a coordinate point on the line, which was that at week 4, or when
`x = 4`, we have $1700 in the account, or
`y = 1700`. Thus, the coordinate point is
`(4, 1700)`.

Using this information, we can find the equation of the line:

`(y - 1700) = 200(x - 4)`

The answer is (y - 1700) = 200(x - 4).