What is the slope of the line on the graph?
a. -4/3
b. -3/4
c. 3/4
d. 4/3

Option B.

Step-by-step explanation:

The equation of the line is , where m is the slope and b the y-intercept.

As you can see in the graph, the line intersects the y-axis at 1. Then, you can choose to points of the line and susbsitute these vaues into the equation of the line and solve for the slope, as you can see below:

Let's chose (-4,4), then:

7/40 is the fraction filled with water

Step-by-step explanation:

Here we start by calculating the volume of the cylindrical tank.

Mathematically, that would be;

V = π * r^2 * h

From the question

r = 80 cm = 80/100 = 0.8 meters

h = 1.4 meters

π = 22/7

Plugging these values into the volume equation, we have;

V = 22/7 * 0.8 * 0.8 * 1.4 = 2.816 m^3

But mathematically;

1 m^3 = 1000 liters

So 2.816 m^3 = 2.816 * 1000 = 2816 liters

So the fraction filled with water will be;

492.8/2816 = 0.175 = 175/1000 = 7/40