Algebra / Linear Functions
Linear Functions
Parameter questions for linear functions may ask for an unknown slope, intercept, or coefficient from function values or rate-of-change conditions.
Least you need to know
- For a linear function, the rate of change is constant.
- A function value such as $f(3)$ gives an equation involving the input 3.
Key notation
- $f(x)=mx+b$ — Slope-intercept form of a linear function
Worked example
- Substitute the given input-output pair into the function rule.
- Solve for the unknown parameter.
Common mistakes
- Do not treat function notation as multiplication.
How to recognize it
- The problem gives a linear function with an unknown coefficient.
Prochaine leçon recommandée
Continuez ce thème avec Modeling across tables, points, and equations.
Modeling across tables, points, and equationsLeçons liées
Continuez avec des leçons proches dans le même thème.