pre algebra
posted by
alejandro
.
how do i solve systems?
example y=x2 y=4x+1

pre algebra 
Reiny
set y = y
4x + 1 = x  2
you finish it.

pre algebra 
Jessica
Multiple the first equation by 1:
y=x+2
Add it from the second one to get:
y=4x+1 +(y=x+2)= 0=3x+3
Subtract 3 from both sides:
3=3x
Divide by 3
x=1
Plug it in for one equation:
y=(1)2
y=3