Question

Determine whether the function\(f(x) = 10 - 3x\)is one-to-one.

Short answer

The function \(f(x) = 10 - 3x\) is one-to-one.

Step-by-step solution

Given data

The given function is\(f(x) = 10 - 3x\).

Concept of functions

The simplest definition is an equation will be a function if, for any \({\rm{x}}\) in the domain of the equation (the domain is all the \({\rm{x}}\)'s that can be plugged into the equation), the equation will yield exactly one value of \({\rm{y}}\) when we evaluate the equation at a specific \({\rm{X}}\).

Simplify the expression

Perform the horizontal line test to check whether the function \(f(x) = 10 - 3x\) is a one-to-one.

Sketch the graph of the function \(f(x) = 10 - 3x\) and perform the horizontal line test.

From Figure, it is observed that the horizontal line intersects the graph of \(f(x) = 10 - 3x\)exactly at once, which means it passes the horizontal line test.

Therefore, the function \(f(x) = 10 - 3x\) is one-to-one.