6.7 Writing Linear Functions

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Presentation transcript:

6.7 Writing Linear Functions

What would the equation be if the slope was -3 and the y-intercept was 1? What would the equation be for the linear function f(x) whose graph has a slope of -5 and a y-intercept of -6?

Writing Linear Equations To write a linear equation all you need is the slope and y-intercept. Once you have the slope and y-intercept, write the equation in slope-intercept form, y = mx + b.

The table shows several ordered pairs for the linear function f(x) The table shows several ordered pairs for the linear function f(x). Write an equation for f(x). x f(x) -1 -2 1 6 3 14

2. The graph shows the weight of a female elephant as she grows from 1 year to 3 years. What was the weight of the elephant at birth?

Write an equation to represent the situation. Then find the weight at birth. What does the weight at birth represent in our graph?

Review: Write an equation for the linear function f(x) using the given information.