y=−9/2x+10
step-by-step explanation:
let's solve for y.
0−9x−2y=−20
step 1: add 9x to both sides.
−9x−2y+9x=−20+9x
−2y=9x−20
step 2: divide both sides by -2.
−2y
−2
=
9x−20
y=
−9
2
x+10
225x²+4=0
225x²=0-4
225x²=-4
x²=-4/225
x=±√-4/225