1. Section 5.1 Writing Linear Equations in Slope-Intercept form
Objectives:
Use the slope-intercept form to write an equation of a line
Model a real-life situation with a linear function

2. Slope-intercept form
A linear equation written in the form The slope of the line is The y-intercept is .
In this lesson, you will learn to write an equation of a line using its slope and y-intercept.
EX: Write an equation of the line whose slope and y-intercept are given. 1. 2.

3. Ex: Write an equation of the line shown in the graph3. 5. 4.

4. Student Poll questions
A) Write an equation of the line whose slope and y- intercept are given. a) b) c) d)
B) Write an equation of the line shown in the graph
a) c)
b) d)

5. EX: Solve the word problem
6. Suppose a bike shop charges a flat fee of $4 and an additional $1.50 per hour.
A) Write an equation to model the total cost y of renting a bike for x hours.
B) Graph the equation
C) Use the equation to find the cost of renting a bike for 12 hours.

6. EX: Solve the word problem
7. The number of trout in a lake was estimated to be thousand in During the next 10 years, the trout population is expected to increase by about 3.2 thousand per year.
a) Write an equation to model the trout population in any year between 1995 and Let t be the number of years since 1995.
b) Predict the trout population in 2002

7. 5.1p – 24 evens,28, 29, 30, 32, 38, 39, 51 – 57x3