Write the equation for each line in form Ax+By=C using slope=1/2 and point (3,1)?

math

Write the equation for each line in form Ax+By=C using slope=1/2 and point (3,1)?
start with point-slope form because that's what you're given:





y - 1 = 1/2 (x - 3)





multiply through by 2 (to get rid of fraction) and clear ()'s:





2y - 2 = x - 3





subtract x and add 2 to both sides:





-x + 2y = -1





multiply through by -1:





x - 2y = 1





that's it!
Reply:x - 2y =1