Unit 4 Review

Lines

100

Parallel lines have what in common?

The same slope.

200

y=mx+b is called what form?

Slope-intercept form

300

Ax+By=C is the _____ form of a line.

Standard

400

Is the point (1,2) on the line, y=0.5x +1?

No

500

What can you say about the slope of perpendicular lines?

The slopes are negative reciprocals of each other.

Sequences

100

What does the "d" represent in an arithmetic sequence's explicit formula?

common difference

200

What is the explicit formula of an arithmetic sequence?

a_n=a_1± d(n-1)

300

The table of a sequence has inputs that represent___ and outputs that represent____.

The table of a sequence has inputs that represent n and outputs that represent a_n

400

True or false, arithmetic sequences are both exponential and discrete.

False

500

True or false: The domain of a sequence is in the set of natural numbers (or counting numbers).

True

Inequalities

100

For x>3, an open circle includes or excludes the 3?

Excludes

200

When dividing by a negative, you must do what to the the inequality symbol?

Flip it

300

When graphing an inequality, do you shade above or below the line if we have a < symbol.

Below

400

Are <, > symbols dashed lines or solid lines?

Dashed

500

Is (2,0) a solution to the graph, y>3x+4?

No

Misc.

100

What letter does the y-intercept represent?

b

200

What part of a linear equation represents the average rate of change?

m

300

What is the slope formula?

(y₂-y₁) divided by(x₂-x₁)

400

The domain describes a set of _____ values and the range describes the set of ______ values.

x&y

500

If f(x)=7x-6, find f(4).

22

Vocabulary

100

What is a number in a sequence called?

Term

200

What is the average rate of change?

Slope

300

Continuous or Discrete?

A graph where the points are connected.

Continuous

400

Counting numbers begin with what integer?

1

500

What are the two parameters of a linear equation?

Slope and y-intercept