SOLUTION: how do you graph y=2x+4

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Question 405704: how do you graph y=2x+4
Found 2 solutions by jim_thompson5910, Alan3354:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

Looking at y=2x%2B4 we can see that the equation is in slope-intercept form y=mx%2Bb where the slope is m=2 and the y-intercept is b=4


Since b=4 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 2, this means:

rise%2Frun=2%2F1


which shows us that the rise is 2 and the run is 1. This means that to go from point to point, we can go up 2 and over 1



So starting at , go up 2 units


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



Now draw a line through these points to graph y=2x%2B4

So this is the graph of y=2x%2B4 through the points and


If you need more help, email me at jim_thompson5910@hotmail.com

Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you

Jim

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Do it like this one:
-------------------
They're straight lines so you need 2 points.
y = -3x-4
Pick 2 values of x and find y
@x = 0, y = -4
@x = 2, y = -10
Plot the 2 points, draw a line thru them.