4x+3y=7
3x-2y=9
12x+9y=21
12x-8y=36
^^Multiply top equation by 3 and multiply bottom equation by 4
12x+9y=36
- 12x-8y=36
17y=-15
^^Then subtract those two new equations
17y/17= -15/17
Y= -0.88
^^Next divide both sides by 17
4x+3* -0.88=7
4x + (-2.64) =7
-(-2.64) -(-2.64)
4x = 9.64
4x/4=9.64/4
X=2.41
^^then choose on equation and put your new y in the y spot and solve.
X=2.41
Y=-0.88
Your point/coordinate is (2.41,-.88)
Y x y = y^2
-9 x y = -9y
-2 x y = -2y
-9 x - 2 = 18
y^2 -9y -2y + 18
y^2 -11y + 18
(^2 = squared)
Answer:
ok
Step-by-step explanation:
The second one. (B) because i learned about it in 6th grade.
Answer:
Step-by-step explanation: