Question 110446
y=x^2+3x-4
{{{ graph( 300, 200, -6, 5, -10, 10, y= x^2 +3x -4) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, y = x^2 +3x -4).
some of the points are (0,-4) obtained by setting x=0 & solving for y
setting y=0 & solving for x we get
x^2+3x-4=0
(x+4)(x-1)=0
x+4
x=-4 answer. (-4,0)
x-1=0
x=1 answer. (1,0)