Can somebody please answer this question?

4

Step-by-step explanation:

Plug the equation into desmos and when y is-6 x is 4 also plug in 6 for y 4 times 4 equals 16 + -6 equals 10 so the answer is 4

x = 4

Step-by-step explanation:

4x + y = 10

They are telling you that y = - 6 so you put that into the equation and solve for x.

4x + (- 6 ) = 10   or 4x - 6 = 10

Add 6 to both sides

4x - 6 + 6 = 10 + 6

4x = 16

Divide both sides by 4

4x / 4 = 16 / 4

x = 4

You can check your answer by put you x value into the same equation and solve for y.  It should equal - 6.

4(4) + y = 10

16 + y = 10

y = - 6

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