SOLUTION: How do you Plot the graphs of the following functions 1. (x)=6x 2. f(x)=3x - 2 3. f(x)=(1/2)x 4. f(x)= log2x

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: How do you Plot the graphs of the following functions 1. (x)=6x 2. f(x)=3x - 2 3. f(x)=(1/2)x 4. f(x)= log2x       Log On


   



Question 145504: How do you Plot the graphs of the following functions

1. (x)=6x
2. f(x)=3x - 2
3. f(x)=(1/2)x
4. f(x)= log2x

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I'll do the first two to get you started

# 1



Looking at y=6x we can see that the equation is in slope-intercept form y=mx%2Bb where the slope is m=6 and the y-intercept is b=0 note: y=6x really looks like y=6x%2B0


Since b=0 this tells us that the y-intercept is .Remember the y-intercept is the point where the graph intersects with the y-axis

So we have one point




Now since the slope is comprised of the "rise" over the "run" this means
slope=rise%2Frun

Also, because the slope is 6, this means:

rise%2Frun=6%2F1


which shows us that the rise is 6 and the run is 1. This means that to go from point to point, we can go up 6 and over 1



So starting at , go up 6 units


and to the right 1 unit to get to the next point



Now draw a line through these points to graph y=6x

So this is the graph of y=6x through the points and








# 2



Looking at y=3x-2 we can see that the equation is in slope-intercept form y=mx%2Bb where the slope is m=3 and the y-intercept is b=-2


Since b=-2 this tells us that the y-intercept is .Remember the y-intercept is the point where the graph intersects with the y-axis

So we have one point




Now since the slope is comprised of the "rise" over the "run" this means
slope=rise%2Frun

Also, because the slope is 3, this means:

rise%2Frun=3%2F1


which shows us that the rise is 3 and the run is 1. This means that to go from point to point, we can go up 3 and over 1



So starting at , go up 3 units


and to the right 1 unit to get to the next point



Now draw a line through these points to graph y=3x-2

So this is the graph of y=3x-2 through the points and