39/7
7 can fit into 39 as a whole 5 times
you then have 4 left over
5 4/7
-1.25 gallon is the change of the amount of water after 1/3 of an hour.
You just need to times -3.75 by 1/3 and you will get the answer of 1/3 hour
If the point is a y-intercept the x value would be zero. 8 is the slope, 7 is the y-intercept
y=mx+b
(0,7)
Answer:
y= 5x - 3
Step-by-step explanation:
For the slope, use this formula (y2 - y1) / (x2 - x1)
I used (1,2) and (2,7) from the chart
plug 7 for y2, and 2 for x2
then plug 2 for y1, and 1 for x1
7-2 / 2-1 = 5/1 = 5 <-- this is the slope.
Find the y intercept by plugging in (1,2) into y=5x + b
2 = 5(1) +b
2= 5 + b (subtract 5 on both sides)
-3 = b
So the answer is y= 5x - 3
That's simple, six upside down is 9, 5 upside down is 2, and 9 ipside down is two
