Slope and Y-Intercept Graphing

The graph represents the money in a savings account.  What is the meaning of the y-intercept?

• The initial deposit was $30

• $30 is added to the account each week

• It took 30 weeks to same enough money to open an account

• not enough information

The graph represents the height of a burning candle.  What is the meaning of the y-intercept?

• the time it takes to burn the entire candle

• the rate at which the candle is losing height

• the change in the height of the candle each hour

• the original height of the candle

The graph represents gasoline consumption when driving a certain distance in km.  What is the meaning of the slope?

• The tank started with 50 L of gasoline

• the amount of gasoline consumed per km driven

• the distance it takes to lose a Liter of gas

• the gasoline is leaking because the slope is negative.

What does the slope mean in the context of the problem?

• The cost will increase by $1.40 per topping

• The cost will decrease by $1.40 per topping

• The cost will increase by $1.90 per topping

• The cost will decrease by $1.90 per topping 

Find the slope:

• 2

• -2

• 1/2

• -1/2

Find the slope of the line.

• -5/4

• 5/4

• -4/5

• 4/5

What is the slope?

Mathematical Equivalence

ON

find the slope

What is the slope of the line containing the points shown?

• 4

• -4

Which letter in the equation below represents the slope?

• y

• m

• x

• b