Question 199734
that equation is in the standard form for a line.
If you were given {{{(1/2)x + y = 1}}} would you able to solve it?
Pick a few values for x and then solve for y. Then plot them and see the solution

See the result at this URL --> http://www77.wolframalpha.com/input/?i=(1%2F2)x+%2B+y+-+1+%3D+0

if you want a local tool to do this type of work, go get geogebra.
See here for more tools --> http://collabvsl.wetpaint.com/page/Mathematics+Applications