The value of y varies directly with x and y=12 when x=-6 find y when x=-4 a)-8 b)8 c)6 d)-6

B)8

Step-by-step explanation:

That is the right answer because when y=12,  x=-6

12/-6 = -2

This means that x = y/-2

or y = x * -2

-4 * -2 = 8

Hope I helped

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

i belive those are the ones that are under 90 degreese.