Complete the following:
`2x+y=8`
x: 0, `square`, 3
y: `square`, 4, 2
(x,y): `square`, `square`, (3,2)

`x-y=1`
x: `square`, 2, `square`
y: -1, `square`, 4
(x,y): `square`, `square`, `square`

Square of 3x – 4y is

Mean of x= 25 Mean of y =20 sigma_x = 4 sigma_y=3 r = 0.5 b_(yx) = square b_(xy)= square When x = 10 y-square=square(10 - square) :. y = square

b_(xy) = (square)/(square) b_(yx) = (square)/(square) :. Regression equation of x on y is square :. Regression equation of y on x is square

Complete the following activity to solve simultaneous equations : 4x+ 3y = 18 " "...(1) 5x - 3y = 9 " " ...(2) Adding equations (1) and (2) , +{:(4x+3y=18" ...(1)"),(5x-3y=9" ...(2)"),(bar(squarex" "=square)):} :. X = (square)/(square ) " " :. X = square Substituting x = 3 in equation (1) , 4 xx square + 3y = 18 " " :. 3y = 18 - square " " :. 3y = square :. y = 2 (x,y ) = (square, square ) is the solution

The regression equation of x on y is 40x-18y = 214… (i) The regression equation of y on x is 8x -10y +66 =0….. (ii) Solving equations i and ii, barx=square bary=square :. b_(yx) = (square)/(square) :. b_(xy) = (square)/(square) :. r = square

If sides of a square is (x+2y-z) units then the area of the square is.......

Complete the following activity to solve the sumultaneous equations 3x+2y=6 and 2x+4y=12 by Cramer's rule method. D=|(3,2),(2,4)|=8, D_(x)=|(6,2),(12,4)|=square, D_(y)=|(3,6),(2,12)|=square, x = square , y = square .