Maths Standard Year 11 - Module 1 - Lesson 11
Intercepts and Linear Equations
Name
Date
Class
1. Key Ideas
- In y = mx + b, m is the gradient or rate.
- In y = mx + b, b is the intercept or starting value.
- The intercept is the output when the input is zero.
2. Success Criteria
- I can identify gradient and intercept from an equation.
- I can write a linear equation from a context or table.
- I can use the equation to make a prediction.
3. Short Answer Questions
1. A taxi fare is $8 plus $2.50 per kilometre. Write an equation for cost C after k kilometres. 3 marks
2. In S = 120 + 25w, explain the meaning of 120 and 25. 2 marks
3. Use S = 120 + 25w to find S when w = 8. 2 marks
4. Write the equation for this table, then predict the output for input 6. 4 marks
| Input | 0 | 1 | 2 | 3 |
|---|---|---|---|---|
| Output | 18 | 25 | 32 | 39 |