Answer:
C. y = -x
Step-by-step explanation:
the slope is -1 so in the formula y= mx + b
b is 0 and m is -1
so plug it in and you get y = -x
Answer:
b = 14
Step-by-step explanation:
9 + (5-b) = 0
9 + 5 - b = 0
14 - b = 0
+ b = + b
14= b
Equation 1) 3x = 9 - 6y
Equation 2) 3x + 8y = 9
Add 6y to both sides in equation #1.
1) 3x + 6y = 9
2) 3x + 8y = 9
Subtract equations from one another.
-2y = 0
Divide both sides by -2.
y = 0
Plug in 0 for y in the first equation.
3x = 9 - 6y
3x = 9 - 6(0)
Simplify.
3x = 9 - 0
Simplify.
3x = 9
Divide both sides by 3.
x = 3
So, x = 3, y = 0
~Hope I helped!~
(3x2 − 8x + 3) − (−5x2 + 4x − 5)=
3x2 − 8x + 3 + 5x2 - 4x + 5)=
8x²-12x + 8
