An aspiring engineer wants to build a timer by taking a glass cylinder, filling it with water, suspending it in the air, and cutting a small hole in the bottom. He notes that at 1 p.m., the cylinder is 80% full, and at 2 p.m., it is 65% full. Draw a graph expressing this and interpret the meaning of the y-intercept.

Respuesta :

Answer:

y axis denotes the level of water in cylinder

x axis denotes the time

Step-by-step explanation:

Given : At 1 p.m. cylinder is 80% full i.e. 0.80.

           At 2 p.m. cylinder is 65% full i.e. 0.65.

Solution :

time(x) :        1                    2

level (y) :      0.80            0.65

Using these points we can plot the graph (refer the attached figure)

In the figure y axis denotes the level of water in cylinder

x axis denotes the time

We can also find the equation of the graph by using two point slope form :

[tex]y-y_{1} =m(x-x_{1})[/tex]  ---a

Where m is the slope

[tex]m=\frac{y_{2} -y_{1}}{x_{2}-x_{1}}[/tex]

Since  [tex](x_{1} ,y_{1}) =(1,0.80)[/tex]

           [tex](x_{2} ,y_{2}) =(2,0.65)[/tex]

Thus  slope (m) =

[tex]m=\frac{0.65 -0.80}{2-1}[/tex]

[tex]m=-0.15[/tex]

Now putting values in equation a

[tex]y-0.80 =-0.15(x-1)[/tex]

[tex]y-0.80 =-0.15x+0.15[/tex]

[tex]0.15x+y-0.95=0[/tex]

Thus the required equation of the situation or the graph is

[tex]0.15x+y-0.95=0[/tex]

THE GRAPH IS ATTACHED AND Y INTERCEPT DENOTES THE LEVEL OF WATER



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