Water is being drained from a pool at a constant rate. the depth of the water is intially 200cm
after 3 minutes,the depth of the water is 179cm
find the total time it takes for the depth of the water to decrease to 144 cm

Step-by-step explanation:

we have

This is the equation of a line in slope intercept form

where

---> the slope

----> the y-intercept

we know that

If the given line was shifted down 7 units, then the new y-intercept is equal to

The slope of the new line will be the same that the original line, because are parallel lines

so

The new equation is