Chapter 5
Review
Name____________________________
Graph the following equations on the graphs provided:
Date________________
y = x – 3
1.
½x + y = 2
2.
x = 4
3.
Guided Notes
Section 5.1 Day 1
Writing Linear Equations in Slope-Intercept Form
Slope-Intercept Form
Recall that the graph of an equation in slope-intercept form, __________________, is a line with a slope of _____ and a y-intercept of ____.
You can use ______________ to write an equation of a line if you know its _____________ and ________________.
Write an equation of the line with a slope of -2 and with a y intercept of 4. y = mx + b Write slope-intercept form.
______________________
Guided Practice
Write the equation of the line with the given slope and y-intercept.
1. Slope is 8; y-intercept is -5. 2. Slope is 3; y-intercept is -6
3. Slope is 4; y-intercept is 7 4. Slope is
5
3
; y-intercept is 4
Now you try.
5. Slope is 2; y-intercept is 6 6. Slope is
3
4
; y-intercept is 3
7. Slope is
1
Example 1
2
; y-intercept is -3 8. Slope is
4
3
; y-intercept is -1
Write an equation of the line shown in slope-intercept form.
Find the slope. m = Rise
Run
Step 1: Calculate the slope b/w 2 points: m =
Step 2: Find the y-intercept of the line by:
seeing where the line crosses the y-axis b =
●
Step 3: Write the equation by using the m & b in y = mx + b:
●
Example 2
Write an equation of the line shown.
Calculate the slope. m = Rise
Run
Step 1: Calculate the slope
Step 2: Find the y-intercept:
●
●
Step 3: Write the equation of the line in slope-intercept form:
Guided Practice
Write the equation of the line with the given slope and y-intercept.
1. Slope is
1
3
; y-intercept is (0,-6). 2. Slope is 4; y-intercept is (0,-8)
3. Slope is 10; y-intercept is (0,9) 4. Slope is
2
7
5. Write an equation of the line shown
in slope-intercept form.
; y-intercept is (0,0)
●
●
6. Write an equation of the line shown
in slope-intercept form.
7. Write an equation of the line shown.
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