Answer:
4. F
5.C
6.G
7.D
8.A
9.E
10.B
Step-by-step explanation:
y
= -1/5x Hope this helps. I think this is the right answer.
That's a parabola. Inside the parenthesis the x-3 affects the placement on the x axis. since is subtracting you move the vertex 3 to the right(because its backwards like that) There is no limit to the x, as it will slowly mom out forever even when its so steep that in reality you dont care, so domain is infinite or all real numbers. the parabola is positive so it moves up forever, but it never goes below its vertex on the x axis.
Domain=all real numbers
Range= all real numbers>or = 0
(1/2)n - 4 2/5 because 1/2 n is decreased by 4 2/5.
Answer: (1/3,2)
Step-by-step explanation:
Let O(x,y) be the circumference of the triangle PQR,
Thus, by the property of circumcenter all the vertices of the triangle are at same distance from this circumcenter.
Thus, PO = QO
By the distance formula,
![(x+2)^2+(y-5)^2 = (x-4)^2+(y-1)^2](https://tex.z-dn.net/?f=%28x%2B2%29%5E2%2B%28y-5%29%5E2%20%3D%20%28x-4%29%5E2%2B%28y-1%29%5E2)
![\impliesx^2+ 4x + 4 + y^2+ 25 - 10 y = x^2+16 - 8 x + y^2+1 - 2y](https://tex.z-dn.net/?f=%5Cimpliesx%5E2%2B%204x%20%2B%204%20%2B%20y%5E2%2B%2025%20-%2010%20y%20%3D%20x%5E2%2B16%20-%208%20x%20%2B%20y%5E2%2B1%20-%202y)
![\implies 4x + 4 + 25 - 10 y = 16 - 8 x + 1 - 2y](https://tex.z-dn.net/?f=%5Cimplies%204x%20%2B%204%20%2B%2025%20-%2010%20y%20%3D%2016%20-%208%20x%20%2B%201%20-%202y)
![\implies 4x +8x-10y+2y = 16 + 1 -25-4](https://tex.z-dn.net/?f=%5Cimplies%204x%20%2B8x-10y%2B2y%20%3D%2016%20%2B%201%20-25-4)
![\implies 12x - 8y = 17 - 29](https://tex.z-dn.net/?f=%5Cimplies%2012x%20-%208y%20%3D%2017%20-%2029)
---------(1)
Similarly, QO = RO
![\implies (x-4)^2 + (y-1)^2 = (x+2)^2+(y+3)^2](https://tex.z-dn.net/?f=%5Cimplies%20%28x-4%29%5E2%20%2B%20%28y-1%29%5E2%20%3D%20%28x%2B2%29%5E2%2B%28y%2B3%29%5E2)
![\implies x^2 + 16 - 8x + y^2+ 1 - 2y = x^2+ 4 + 4 x +y^2+ 9 + 6 y](https://tex.z-dn.net/?f=%5Cimplies%20x%5E2%20%2B%2016%20-%208x%20%2B%20y%5E2%2B%201%20-%202y%20%3D%20x%5E2%2B%204%20%2B%204%20x%20%2By%5E2%2B%209%20%2B%206%20y)
![\implies 16 - 8x + 1 - 2y = 4 + 4 x + 9 + 6 y](https://tex.z-dn.net/?f=%5Cimplies%2016%20-%208x%20%2B%201%20-%202y%20%3D%204%20%2B%204%20x%20%2B%209%20%2B%206%20y)
![\implies - 8x -4x-2y-6y=4+9-16-1](https://tex.z-dn.net/?f=%5Cimplies%20-%208x%20-4x-2y-6y%3D4%2B9-16-1)
![\implies -12 x - 8 y = 13 - 17](https://tex.z-dn.net/?f=%5Cimplies%20-12%20x%20-%208%20y%20%3D%2013%20-%2017)
------------(2)
By adding equation (1) and (2),
24 x = - 8
x = 1/3
By putting this value in equation (1),
We get,
Thus, 4 - 8 y = -12
8 y = 16
y = 2