1A) Determine whether the lines are parallel, perpendicular, or neither. L1: y=1

Question

1A) Determine whether the lines are parallel, perpendicular, or neither. L1: y=1/3x-6 L2: y=1/3x-3
a. perpendicular b. parallel c. neither
1B) The slope of line representing annual sales y in terms of time x in years. Use the slopes to interpret any change in annual sales for a one-year increase in time.
The line has a slope of m=-60.
a. Sales decreasing 60 units/yr
b. No change in sales c. Sales increasing 60 units/year. d. None of the above 1A) Determine whether the lines are parallel, perpendicular, or neither. L1: y=1/3x-6 L2: y=1/3x-3
a. perpendicular b. parallel c. neither
1B) The slope of line representing annual sales y in terms of time x in years. Use the slopes to interpret any change in annual sales for a one-year increase in time.
The line has a slope of m=-60.
a. Sales decreasing 60 units/yr
b. No change in sales c. Sales increasing 60 units/year. d. None of the above L1: y=1/3x-6 L2: y=1/3x-3
a. perpendicular b. parallel c. neither
1B) The slope of line representing annual sales y in terms of time x in years. Use the slopes to interpret any change in annual sales for a one-year increase in time.
The line has a slope of m=-60.
a. Sales decreasing 60 units/yr
b. No change in sales c. Sales increasing 60 units/year. d. None of the above

Explanation / Answer

Solution:

1)

L1: y=1/3x-6

L2: y=1/3x-3

Two lines will be parallel when their slopes are equal, and two lines will be perpendicular when their slopes are

negative reciprocals of each other.

Our slopes for these two equations are the coefficient for the x value.

1/3 and 1/3

Both slopes are equal so these lines are parallel.

2)

Your slope = sales/time

Since your slope is positive you would have an increase in sales for that year.

Therefore your sales would increase 60 units per year.

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