I have the graphs, I just have questions. I don't understand how these graphs were formed. Please explain how this is done. Where do the lines intersect? Aren't there coordinates?

Following is the text part of the solution. Please see the attached file for complete solution. Equations, diagrams, graphs and special characters will not appear correctly here.
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1. f(x)=6x

( I will give a detailed explanation for the first problem. This will help you understand the other two as well. I will give shorter explanations to the other two problems. Highlighted phrase is important to understand)
You only need the general shape of the graph. So you will analyze the given function at extreme values of x to get the general appearance ...

Solution Summary

How to plot graphs without using a graphing utility? That is the question that is answered in this problem set. Several examples involving exponential functions and logarithmic functions are used to show how one can analyze the functions to draw their graphs without using a graphing utility. Understanding how to plot/sketch graphs is very important in the field of mathematics and other sciences and this solution will give you a head start on learning that.

... One example of exponential function is y = 2x Its graph is shown below: ... 4. The graph of logarithmic function is always an increasing function. ...

...Graphing Parent Functions Description: Graphing parent functions of quadratic, cubic, log and exponential functions. Quadratic Function Example 1 Graph y = x2. ...

... number of years from some convenient year and then enter the data into your graphing technology and ... If so, the data can be modeled by an exponential function. ...

... data to different kinds of functions is investigated. ... type: linear, quadratic, polynomial, rational, exponential, and log ... Plot each equation on the same graph. ...

... easily using exponential and logarithmic functions. For example, consider ideal gases: Pressure versus volume give a curved plot, but a log graph of pressure ...

... 1. The exponential function for the amount of money accumulated in a mutual fund is , where P is ... Show the graph of the value of your investment over 15 years. ...

...exponential function for three positive values of x, three negative values of x, and at x=0. Show your work. Use the resulting ordered pairs to plot the graph; ...