Upload
chloe-jenkins
View
213
Download
0
Embed Size (px)
Citation preview
EXAMPLE 1 Identify slope and y-intercept
Identify the slope and y-intercept of the line with the given equation.
y = 3x + 41. 3x + y = 22.
SOLUTION
The equation is in the form y = mx + b. So, the slope of the line is 3, and the y-intercept is 4.
a.
b. Rewrite the equation in slope-intercept form by solving for y.
EXAMPLE 1 Identify slope and y-intercept
3x + y = 2 Write original equation.
y = –3x + 2 Subtract 3x from each side.
ANSWER
The line has a slope of –3 and a y-intercept of 2.
EXAMPLE 1 Identify slope and y-intercept
Identify the slope and y-intercept of the line with the given equation.
y = 5x – 31.
GUIDED PRACTICE for Example 1
ANSWER 5, –3
EXAMPLE 1 Identify slope and y-intercept
Identify the slope and y-intercept of the line with the given equation.
3x – 3y = 122.
GUIDED PRACTICE for Example 1
ANSWER 1, –4
EXAMPLE 1 Identify slope and y-intercept
Identify the slope and y-intercept of the line with the given equation.
x + 4y = 63.
GUIDED PRACTICE for Example 1
ANSWER 41 ,
211