Question 172076: Dear tutors, I am desperate, I need help plotting and graphing these questions. Any assistance will be greatfully appreciated! Thank you!
Plot the graphs of the following functions and graph.
1. f(x)=7x
2. f(x)=4x - 3
3. f(x)=(1/5)x
4. f(x)= log3x
Found 2 solutions by Alan3354, solver91311:
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Plot the graphs of the following functions and graph.
1. f(x)=7x
2. f(x)=4x - 3
3. f(x)=(1/5)x
4. f(x)= log3x
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The 1st 3 are linear (no exponents other than 1), so they're straight lines. To graph a straight, you need only 2 points, then draw the line thru them.
You can substitute y for f(x), and label the graph x and y, this is common.
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1. y=7x
Find 2 points.
At x = 0, y = 0, so 1 point is (0,0), the origin.
At x = 1, y = 7, so another point is (1,7)
Draw a line thru those 2 points.
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2. y=4x - 3
At x = 0, y = -3 --> (0,-3) Point 1
At x = 2, y = 5 --> (2,5) Point 2
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3. y=x/5
Do the same thing.
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4. y= log3x
This one is different, it's not a straight line. You have to find several points, then connect them with a smooth continuous line by hand.
If you have Excel, you can use that to find the points. Excel will also draw the graph for you.
In the case of logs, x has to be >0
Try it, if you need more help email me at gsihoutx@aol.com
Answer by solver91311(24713)  (Show Source):
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