Question

Q3 What are the coefficients of x in the following expressions 4x - 3y, 8 - x + y, yx-y, 22-5x2...​

Answer 1

Find coefficient of x :

(i) 4x - 3y

• Term with variable x = 4x
• Coefficient of x in 4x = 4

4 is the coefficient of x in 4x - 3y

(ii) 8 - x + y

• Term with variable x = ( -x )
• Coefficient of x in ( -x ) = -1

-1 is the coefficient of x in 8 - x + y

(iii) yx - y

• Term with variable x = yx
• Coefficient of x in yx = y

y is the coefficient of x in yx - y

(iv) 22 - 5x²

Note that this expression doesn't have a term that has the variable x to the power of 1. So, we can rewrite the expression:

22 - 5x² + 0x

Here, x times 0 is 0, and zero is the additive identity, so, value of the expression will not change.

Coefficient of x is 0