Interpret Rate of Change Y-Intercept

Why is this function linear?

• This is a linear function because the y-intercept is (0,8)

• This is a linear function because it has a constant rate of change.

• This is a linear function because it does not have a constant rate of change.

• This is a linear function because the slope is -1

Which equation represents this graph? (hint: which direction is the line facing?)

Which equation represents this graph? (hint: which direction is the line facing?)

Which equation represents this graph? (hint: where is the y-int?)

Why is this function nonlinear?

• This function is nonlinear because it has a constant rate of change.

• This function is nonlinear because it does not have a constant rate of change.

• The function is nonlinear because the y-intecept is (0,1)

• This function is nonlinear because there is a coefficient of 4.

A T-shirt design company charges your team an initial fee of $25 to create the team's design. Each t-shirt printed with your design costs an additional $8. The equation for this situation is y = 8x + 25. Interpret the y-intercept in context.

• The additional fee of $8.

• The initial fee of $25.

• The additional fee of $25.

• The initial fee of $8.

Bob has $150 in his savings account and saves $40 per month.  Which equation represents the amount Bob has in his account after x months?

• y = 150 + 40

• y = 40x + 150

• y = 150x + 40

Which equation represents this graph?

Categorize the slope of the line

• Positive

• Negative

• Zero

• Undefined

Categorize the slope of the line

• Positive

• Negative

• Zero

• Undefined