Answer:
y= -7 and x= -1
Step-by-step explanation:
To do this, line up the variables so it looks like this...
y-6x=-1
y-3x=-4
The reason why -6x and -3y changes to negative is because that it moved to the other side of the equation.
distribute negative to the bottom equation because the two equations have the same number variable which is y...
y-6x=-1
-y+3x=4
Y cancels out and it will be left with -3x = 3.
X = -1.... plug that in to any of the two equation and you get y = -7.
Hope I helped and have a nice day!!
-2x-y=7
Add 2x to both sides
-y= 2x+7
Multiply both sides by-1
Y= -2x-7
2y=x+1
2(-2x-7)= x+1
-4x -14. =x+1
Add 14 to both sides
-4x=x +15
Subtract x from both sides
-5x=15
X=-3
2y =-3+1
-2y=-2
Y=1
(-3,1)
Answer:
A
Step-by-step explanation:
Mulitply 3 by 7x and -8
21x - 24
Answer:
B is the answer
Step-by-step explanation:
Answer:
8 in²
Step-by-step explanation:
The area of a triangle is always base times half height. Since this triangle has a 90° corner, the vertical 4 inch is also the height.
So area is 4*4/2 = 8