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volume of rectangular prism
area of a parallelogram
circumference of a circle
area of a circle
area of a triangle
area of a trapezoid
perimeter of a quadrilateral

Volume of a parallelogram is v=whl

Area of s parallelogram is A= bh

Circumference of a circle= rd

Area of a circle= rd^2

Area of a triangle is 1/a bh

Area of a trapezoid is 1/2(b1 + b2)h

Perimeter of a quadrilateral is 2L + 2W

I couldn't drag the image but I knew what I was doing!

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )