Classify the Linear Function: Understanding y=2-3x

Question

Which best describes the function below?

y=23x y=2-3x

Video Solution

Step-by-Step Solution

To determine the characteristic of the function y=23x y = 2 - 3x , we will evaluate the slope:

  • The given function is in the form y=mx+b y = mx + b , which indicates a linear equation. Here, y=23x y = 2 - 3x can be rearranged as y=3x+2 y = -3x + 2 , showing that m=3 m = -3 .
  • The slope m m is 3-3.
  • In a linear function, the sign of the slope m m determines the function's behavior:
    • If the slope m m is positive (m>0 m > 0 ), the function is increasing.
    • If the slope m m is negative (m<0 m < 0 ), the function is decreasing.
    • If the slope m=0 m = 0 , the function is constant.
  • Since m=3 m = -3 , which is negative, we conclude that the function is decreasing.

Therefore, the function described by y=23x y = 2 - 3x is decreasing.

Answer

The function is decreasing.