# equations meet?

• February 24th 2010, 11:05 PM
Wildman
equations meet?
Can anyone help me with this?

Where do the following equations meet. (solve graphically and mathematically)

Y=2x²-6
Y=x-3
• February 24th 2010, 11:22 PM
drewbear
$
y=2x^2-6
$

$
y=x-3
$

$
2x^2-6=x-3
$

$
2x^2-x-3=0
$

$
(2x-3)(x+1)=0
$

$x=-1 or x=1.5$

so they meet at -1 and 1.5. you can see this on a graph when the two graphs cross each other