Functions & Relations

The form y - y₁ = m(x - x₁) is called __________ form.

• point-slope

• slope-intercept

• function

• standard

The graph of a linear function is a __________

• circle

• line

• parabola

• ellipse

Choose all that apply.

A relation can be represented by which of the following:

• ordered pairs

• table

• graph

• equation

• mapping

A non-linear function can be represented by all of the following EXCEPT:

• parabola

• circle

• hyperbola

• line

A relationship between two variables is called a _________

• function

• correlation

• relation

• table

A shipping company charges a cost per pound plus a fixed fee to ship a package. The total cost, f(x), in dollars, of shipping x pounds is modeled by

f(x) = 4.99x + 3.29

• 3.29

• 4.99

• 4.99x

• x

Select ALL of the correlation coefficients that represent a linear model with a weak correlation.

• -0.987

• 0.333

• 0.204

• -0.001

• 0.675

A linear model shows that the relationship between the number of grocery items purchased and the total cost of the grocery bill has a correlation coefficient of 0.89.

• There is a strong relationship between the number of items purchased and the total cost of the grocery bill.

• If a grocery bill has a higher cost, then more items must have been purchased.

• Purchasing more items causes a higher cost of the grocery bill.

• There is no relationship between the number of items purchased and the total cost of the grocery bill.

Select ALL the equations that can be represented by a straight line when graphed on the coordinate plane.

• x = 15y - 8

• 2x² + y = -3

• y = -3(x + 7)

• x = -3y³ + y

• y = x(3x + 2) -1

List the ordered pairs

• (1,3), (2,6), (3,9), (4,12)

• (3,1), (6,2), (9,3), (12,4)

• Input and Output

• Output and Input