identify the coefficients in the expression below.
-6x + 5y + 4x + 9
a. -6,5,4,9
b. -6,5,4
c. 9
d. -6x, 4x

B. -6,5,4

Step-by-step explanation:

To find the coeffiecient in

-6x +5y + 4x + 9

we will first have to know what coefficients are.

Coefficients are constant quantitiy placed before a variable, this contant quantity must be placed in such a way that it is multiplying the variable.

So, from the above definition; we can deduct that -6 is placed before the variable x and it is multiplying x.

-6 is a coefficient of x.

5 is placed before the variable y and is multiplying y, then 5 is a coefficient of y.

4 is placed before the variable x and is multiplying x, then 4 is a co-efficient of x

But 9 is not attached to any variable, so 9 cannot be called a coefficient but rather 9 is just a CONSTANT.

Therefore the coefficients are; -6, 5 and 4

a

step-by-step explanation:

given the 2 equations

- x + y = - 2 → (1)

2x - 3y = 4 → (2)

multiplying (1) by 2 and adding to (2) will eliminate the x- term

- 2x + 2y = - 4 → (3)

add (2) and (3) term by term

(2x - 2x) + (- 3y + 2y) = (4 - 4), simplifying gives

- y = 0 ⇒ y = 0

substitute y = 0 in either of the 2 equations for corresponding value of x

substituting in (2) gives

2x = 4 ( divide both sides by 2 )

x = 2

solution is (2, 0 ) → a

(x,y) it'll always be like that.

in this case x is grams and y is ounces.

if there were numbers there, like (5,3)

x would be 5 and y would be 3.