a. write an equation :
at the beginning of the day, the water in the swimming pool was 2ft deep. Throughout the day, water was added at a rate of 0.4 of a foot per hour. What was the depth, y, of the water in the pool after being filled for ,x, hours?

Question

anonymous · Answer

y=mx+b where b is an initial value and m is the slope, which is the rate of change...

anonymous · Answer

so 2ft at the beginning, so 2 is the y-intercept
aded at a RATE of 0.4 of a foot per hour, slope is 0.4
now plug everything into slope-intercept form

anonymous · Answer

so what's the equation can you write it in equation form ?

anonymous · Answer

Yes, but let's let's see you try with the information anhhuyalex and I gave you.

anonymous · Answer

is it : 2+0.4x=y ?

anonymous · Answer

Yes it is! Normally, the notation has the y on the left and the other stuff on the right, but it's still correct.

anonymous · Answer

thank you :) i wrote it before but i wasnt sure :) needed a little check =]