You can put this solution on YOUR website! first graph given lines (as equalities )
he figure formed by each system is a triangle and you can find the coordinates of the vertices so that you find intersection points of the all three lines
given:
.......1)-> horizontal line .......2) .......3)
---------------------------
.......1)...........substitute in 2)
.......2)
intersection point of the lines 1) and 2) is at (,)
.......1)...........substitute in 3)
.......3)
intersection point of the lines 1) and 3) is at (,)
.......2)......solve for .......2).........substitute in 3)
.......3).....solve for
then
intersection point of the lines 2) and 3) is at (,)
now, plot these points:
