Algebra I Part 1
Unit 4 Day 3 - Writing Equations in Point-Slope Form Homework
Name: _______________________________
Write an equation in point-slope form for the line that passes through each point with the given slope. Then
graph the equation.
1. (2, -1), m = -3
10
2. (-7, 6), m = 0
10
y
8
8
6
6
4
4
2
y
2
x
-10 -8 -6 -4 -2
-2
2
4
6
8
10
x
-10 -8 -6 -4 -2
-2
-4
-4
-6
-6
-8
-8
-10
-10
2
4
6
8
10
7
3. Write an equation in point-slope form for a line that passes through (-2, -9) with a slope of  .
5
4. Write an equation for a horizontal line that passes through (-6, 0).
Write each equation in slope-intercept form form.
5. y – 9 = -6(x + 9)
6. y + 4 =
2
(x + 7)
3
7. y – 11 = 3(x + 4)
8. y – 1 =
4
(x + 5)
5
9. MOVIE RENTALS
The number of copies of a movie rented at a video store decreased at a constant rate
of 5 copies per week. The 6th week after the movie was released, 4 copies were rented. How many
copies were rented during the second week?
Write an equation in point-slope form for each line.
y
10.
4
(1, 3)
12.
6
m=
2
y
y
11.
8
6
(-3, 7)
4
m=
4
2
x
x
-4
-2
m=4
2
-2
-4
2
4
-8
x
-4
-2
(-4, -1)
2
-2
4
-6
-4
-2
-2
2
4
6
8
-4
-6
-8
-10
13. ERROR ANALYSIS Juana and Sabrina wrote an equation in point-slope form for the line that passes
through (3, -7) and (-6, 4). Is either of them correct? Explain.
10