Answer:
<h2>C) 12x + 9</h2>
Step-by-step explanation:
The distributive property: <em>a(b + c) = ab + ac</em>.
If the slope if is undefined, then the line is vertical.
The equation of a vertical line: x = a (a - any real number).
The line passes through the point (-3, 0) → x = -3 and y = 0.
Therefore we have x = -3.
The general form of a line: Ax + By + C = 0.
x = -3 <em>add 3 to both sides</em>
<h3>x + 3 = 0</h3>
2x+4y=450
2x=450-4y
x=450-4y÷2----- equation 1
4x+2y=420
4x=420-2y
x=420-2y÷4----- equation 2
putting the value of x in equation 1
x=450-4y÷2
420-2y÷4=450-4y÷2
2(420-2y)=4(450-4y)
840-4y=1800-16y
840-1800=-16y-4y
-960= -12y
y=80
putting the value of y in equation1
2x+4y=450
2x+4×80=450
2x+320=450
2x=450-320
2x=130
x=130÷2
x=65
<h2> the value of x is 65 and y is 80</h2>
