1. Give an

example of an inequality with an unbounded solution set.

2. False.

The slope with the greatest magnitude corresponds to the steepest line.

3. Find

the distance between each two points and use the Pythagorean Theorem.

4. No. The

slope cannot be determined without knowing the scale on the -axis. The slopes

could be the same.

5. The

line rises most quickly, and the line falls most quickly. The greater the

magnitude of the slope (the absolute value of the slope), the faster the line rises

or falls.

Q469;

1. No. The

slopes of two perpendicular lines have opposite

1. Give an

example of an inequality with an unbounded solution set.

2. False.

The slope with the greatest magnitude corresponds to the steepest line.

3. Find

the distance between each two points and use the Pythagorean Theorem.

4. No. The

slope cannot be determined without knowing the scale on the -axis. The slopes

could be the same.

5. The

line rises most quickly, and the line falls most quickly. The greater the

magnitude of the slope (the absolute value of the slope), the faster the line rises

or falls.

Q469;

1. No. The

slopes of two perpendicular lines have opposite signs (assume that neither line

is vertical or horizontal).

2. No, the

input values 7 and 10 each have two different output values.

3. (a)

Function

(b) Not a function, because the

element 1 in corresponds to two elements, and 1, in

(c) Function

(d) Not a function, because not

every element in is matched with an element in

4. Each is

a function. For each year there corresponds one and only one circulation.

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