Algebra

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1. Write the equation of the line that passes through point (–2, 3) with a slope of –4.

Answer: y = -4x - 5

2. Find the slope and y-intercept.
x = –8

3. Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = –3x + 1.

Answer: y = 1/3x + 5

4. Write the equation of the line passing through (4, 4) and (4, 2).

5. Determine which two equations represent perpendicular lines.

A. y = 4/7x – 3

B. y = 3x – 4/7

C. y = -1/3x + 4/7

D. y = 1/3x – 4/7

6. Find the y-intercept.
–x + 3y = 15

7. Determine which two equations represent parallel lines.

A. y = 5/3x + 4

B. y = -3/5x – 7

C. y = 2x + 8

D. y = 2x – 4

8. Find the slope of the line passing through the points (–7, –4) and (–1, –10).

9. Find the slope of the line passing through the points (–9, –4) and (0, –4).

10. Find the slope of the line passing through the points (4, 0) and (4, 5).

11. An employee who produces x units per hour earns an hourly wage of y = 0.35x + 11 (in dollars). Find the hourly wage for an employee who produces 2 units per hour.

12. Which of the ordered pairs
(3, 1), (0, –4), (–4, 0), (–3, –7)
are solutions for the equation x – y = 4?

Answer: (0, –4) and (–3, –7)

13. Find the slope of the line passing through the points (–8, –3) and (–2, 2).

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#1 correct

#2 you did not finish writing the question

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5,-2 -3.8

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10) Two perpendicular lines pass through the point (0, -8). One of the lines has a slope of -4. Write the equation of both lines in slope-intercept form.