SOLUTION: How do you graph x+2y=-1

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Question 913038: How do you graph x+2y=-1
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

x-intercept


To find the x-intercept, plug in y=0 and solve for x


x%2B2y=-1 Start with the given equation.


x%2B2%280%29=-1 Plug in y=0.


x%2B0=-1 Multiply 2 and 0 to get 0.


x=-1 Simplify.


So the x-intercept is .


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y-intercept


To find the y-intercept, plug in x=0 and solve for y


x%2B2y=-1 Start with the given equation.


0%2B2y=-1 Plug in x=0.


2y=-1 Simplify.


y=%28-1%29%2F%282%29 Divide both sides by 2 to isolate y.


So the y-intercept is .


Now let's plot the points and which are the x and y intercepts respectively.





Now draw a straight line through the plotted points to graph x%2B2y=-1.


Graph of x%2B2y=-1


Let me know if you need more help or if you need me to explain a step in more detail.
Feel free to email me at jim_thompson5910@hotmail.com
or you can visit my website here: http://www.freewebs.com/jimthompson5910/home.html

Thanks,

Jim