2x -3y = 13
4x -y = -9
Multiply the second equation by -3 to make the coefficient of Y opposite the first equation.
4x -y = -9 x -3 = -12x + 3y = 27
Now add this to the first equation:
2x -12x = -10x
-3y +3y = 0
13 +27 = 40
Now you have :
-10x = 40
Divide each side by -10:
x = 40 / -10
x = -4
Now you have a value for x, replace that into the first equation and solve for y:
2(-4) - 3y = 13
-8 - 3y = 13
Add 8 to both sides:
-3y = 21
Divide both sides by -3:
y = 21/-3
y = -7
Now you have X = -4 and y = -7
(-4,-7)
Answer:
the first answer
Step-by-step explanation:
Answer:
(6,2)
Step-by-step explanation:
Basically the rectangle has to match one coordinate in the x position and one in the y position.
Since there are already two points in the 2 x position it should take the x position of the third one (6)
Since there are already two points in the 5 y position it should take the y position of the third one (2)
put these together to get your answer of (6,2)
Answer: 0
Step-by-step explanation:
56 + (-56) is the same as 56 - 56 which equals zero
- 4(20+22)
- 4(40+2)
This expression are equivalent to 4(42)