Warm Up The function below shows the cost of a hamburger with different numbers of toppings (t): f(t) = 1.90 + 1.40t a. What is the y-intercept, and.

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Presentation transcript:

Warm Up The function below shows the cost of a hamburger with different numbers of toppings (t): f(t) = 1.90 + 1.40t a. What is the y-intercept, and what does it mean? b. What is the slope, and what does it mean? c. If Jodi paid $3.30 for a hamburger, how many toppings were on Jodi’s hamburger?

Check Homework

Point-Slope Form Notes

Graphing Linear Equations Guided Notes

Linear functions and their graphs Equations of Linear Functions can be written several ways: SLOPE – INTERCEPT FORM y = mx + b m = slope b = y – intercept POINT – SLOPE FORM y – y1 = m(x – x1) m = slope (x1, y1) is a point on the line STANDARD FORM Ax + By = C **If a line has a slope of 0, then it is HORIZONTAL so y = 0x + b or y = b is the equation. **If a line has an undefined slope, then it is VERTICAL so x = # is the equation.

Example Graph (5, –2) and (–3, –8)

Example Graph (4, –1) with m = -1/2

Example Graph 2x – 3y = 6

Homework: 2.5 Ready and Set