Question

3 what is the x - intercept of the function f(x) = 3x - 7.5 ?

Explanation:

Step1: Recall x-intercept definition

The x - intercept of a function \( f(x) \) is the value of \( x \) when \( f(x)=0 \). So we set \( f(x) = 0 \) in the function \( f(x)=3x - 7.5 \).

Step2: Solve for x

Set \( 3x-7.5 = 0 \). Add \( 7.5 \) to both sides of the equation: \( 3x=7.5 \). Then divide both sides by \( 3 \): \( x=\frac{7.5}{3}=2.5 \).

Answer:

\( 2.5 \)