Answer:
Your correct!
x = -2y + 12
Step-by-step explanation:
Let's solve for x.
x + 2y = 12
Step 1: Add -2y to both sides.
x + 2y + −2y = 12 + −2y
x = −2y + 12
x =20
As a line is 180 degrees
So 7x + 40 would be 180, which would lead us with the equation:
7x+40=180
=7x =140 (minus both sides by 40)
=x =20 (divide both sides by 7)
a = -3 b = -5 c = 9
A quadratic function is written in the form
ax^2 +bx +c =0
-3x^2-5x+9=0
