Hello!
First of all we solve for the slope as seen below.

Our slope is -4.
Now we substitute a point from our equation into slope intercept form, along with the slope. Then we solve for b. We will use (-4,-5)
-5=-4(-4)+b
-5=16+b
b=-21
Our final equation is shown below.
y=-4x-21
I hope this helps!
2(21x − 7) + 4(3x + 2) = 6(2x + 9) + 3
42x - 14 + 12x + 8= 12x + 54 + 3
54x - 6= 12x + 57
54x=12x + 63
42x=63
x= 63/42
x= 3/2
2 pieces: if you’re referring to ‘a foot pieces’ as as 1 foot each piece.
Answer: The correct answer is C.
Step-by-step explanation: The shaded area of the graph satisfies all the inequalities given.