Rate of Change, y=mx+b, y-Intercept

The equation

y = mx + b

is in slope-intercept form.

• True

• False

In the equation y = mx + b "b" is called the:

• y-intercept

• slope

• x-intercept

What is the equation of a line with a slope of 4 and a y-intercept (0,12)?

• y = 4x + 12

• y = 4x + 0

• y = 4x

• y = -4x - 12

Which is the graph of y= -x + 2?

• A

• B

• C

• D

The point on a graph where a function crosses the y-axis (Where X=0); point (0,y); the "b" in slope-intercept form.

• y-intercept

• x-intercept

• How many minutes she was on the phone

• What Tara pays per minute

• How much Tara had to pay before she even made any calls

• How much Tara owes at the end of each month

What does the y-intercept represent?

• It costs $30 for each mile drive.

• There is an initial charge of $30 for the moving van.

• There is an initial charge of $2 for the moving van.

• It costs $1 for every 2 miles driven.

What is the meaning of the y-intercept?

• The cost per ride is $1.75

• The cost per ride is $5

• The cost to get into the fair is $5

• The cost to get into the fair is $1.75

What does the rate of change represent?

• The population increased 5,700 every year

• The initial population was 193,000

• The population decreased 5,700 every year

• The population increased 193,000 every year

Jimmie runs a game at the Spring Time Carnival. What does the y-intercept represent?

• The number of prizes left per number of games played 

• The number of prizes the carnival has before 0 games are played

• The number of games played before running out of prizes

• There were 125 prizes left when 20 games were played.