Slope and Linear Relationships

For this set of numbers, which is the best description?

x y

2 6

3 8

4 10

5 12

• proportional relationship, slope of 2

• proportional relationship, slope of 3

• non proportional relationship, slope of 2

• non proportional relationship, slope of 3

Find the slope of the line. Is the line proportional or non-proportional?

• -2 and non proportional

• -1 and proportional

• -1 and non proportional

• -2 and proportional

Find the slope of the line.

• -5/4

• 5/4

• -4/5

Find the slope of the line.

• Undefined

• 0

Find the slope:

y = 2x + 3

• -2

• 3

• 1.5

• 2

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

For the table below, which is NOT true?

x y

1 1

2 2

3 3

4 4

• It has a slope of 1 and it is proportional.

• It has a slope of 1 and it is non proportional.

• It has a positive slope.

Which graph is proportional?

• A
• B
• C and D
• All of the graphs are proportional

Which graph is non-proportional?

• A
• B
• C
• D

REVIEW QUESTION
Is this table proportional or non-proportional?

• Proportional
• Non-Proportional