Name_________________________________________ Date____________________ Class___________________

Point-Slope FormWrite an equation in POINT-SLOPE form for the line with the given slope that contains the given point.

1. slope 3; (4, 2) 2. slope 1; (6, 1)

__________________________________________ _________________________________________

Graph the line described by each equation.

3. y + 2 (x 6) 4. y + 3 2 (x 4)

Write the equation that describes the line in slope-intercept form.

5. slope 4; (1, 3) is on the line 6. slope (8, 5) is on the line

__________________________________________ _________________________________________

7. (2, 1) and (0, 7) are on the line 8. (6, 6) and (2, 2) are on the line

_________________________________________ _________________________________________

Find the intercepts of the line that contains each pair of points.9. (1, 4) and (6, 10) __________________ 10. (3, 4) and (6, 16) __________________

11. The cost of internet access at a cafe is a function of time.The costs for 8, 25, and 40 minutes are shown. Write an equationin slope-intercept form that represents the function. Then find thecost of surfing the web at the cafe for one hour._________________________________________

Write the equation that describes each line in SLOPE-INTERCEPT form.

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Holt McDougal Algebra 2

Time (min) 8 25 40

Cost ($) 4.36 7.25 9.80

Name_________________________________________ Date____________________ Class___________________

12.slope y-intercept 1 13. slope 3, (3, 4) is on the line.

__________________________________________ __________________________________________

14. slope 0; y-intercept 8 15. slope (7, 8) is on the line.

__________________________________________ __________________________________________

16. The line that passes through (1, 5) and(4, 4). (Hint: Find the slope first.) _____________________________

Write each equation in SLOPE-INTERCEPT form. Then graph the line described by the equation.17. y 2 3x 18. x y 2 19. 2y 3x 4

__________________________ __________________________ __________________________

20. The Johnsons are putting new carpet in their home.Installation is $300 and the carpeting costs $4 persquare foot. The total price of the job as a function ofarea is shown in the graph.

a.Write an equation that represents the total price asa function of area. __________________________________

b.Identify the slope and y-intercept and describe theirmeanings. ________________________________________________________________________________________________

c.Find the total cost if the area is 375 square feet. ______________________________________________________

Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.

Holt McDougal Algebra 2

Name_________________________________________ Date____________________ Class___________________

Practice BPoint-Slope Form

Write an equation in point-slope form for the line with the given slope that contains the given point.

1. slope 3; (4, 2) 2. slope 1; (6, 1)

y – 2 3(x 4) y 1 –(x – 6)Graph the line described by each equation.

3. y + 2 (x 6) 4. y + 3 2 (x 4)

Write the equation that describes the line in slope-intercept form.

5. slope 4; (1, 3) is on the line 6. slope (8, 5) is on the line

y –4x 1 y x – 17. (2, 1) and (0, 7) are on the line 8. (6, 6) and (2, 2) are on the line

y 4x – 7 y x – 3Find the intercepts of the line that contains each pair of points.

9. (1, 4) and (6, 10) x-int: 1, y-int: –2 10. (3, 4) and (6, 16) x-int:6, y-int: 811. The cost of internet access at a cafe is a function of time.

The costs for 8, 25, and 40 minutes are shown. Write an equationin slope-intercept form that represents the function. Then find thecost of surfing the web at the cafe for one hour.

y 0.17x 3; $13.20

Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.

Holt McDougal Algebra 2

Time (min) 8 25 40

Cost ($) 4.36 7.25 9.80

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