Question

What is the coefficient of x in the following expression?

1 - 10x + 4y
Evaluate the following expression for x = 15.

LaTeX: \frac{1}{5}1 5x - 12

Answer 1

(1) The coefficient of x in this expression is -10.

(2) The value of the expression for x = 15 is -9.

Explanation:

(1)

A coefficient is a numerical value that is placed before a variable or is multiplied by the variable in an algebraic equation.

For example, in the algebraic equation 4x² + 5y the coefficient of variable y is 5.

The expression given is:

1 - 10 x + 4 y

The coefficient of x in this expression is -10.

(2)

The expression provided is:

`f(x)=(1)/(5)x - 12`

Compute the value of the expression for x = 15 as follows:

`f(x)=(1)/(5)x - 12\\=((1)/(5)* 15) - 12\\=3-12\\=-9`

Thus, the value of the expression for x = 15 is -9.