Direct Proportion Graphs

If y is directly proportional to x, and y=20 when x=5, what is the equation connecting y and x?

• 20y=5x

• y=5x

• y=4x

• y=(1/4) x

If y is directly proportional to x, and y = 24 when x = 2,

what is the equation connecting y and x?

• y=12x

• y=kx

• 12

• y=k/x

• 12y=x

Is this table proportional?

• yes
• no
• I'm not sure, I need extra help!

Tags

CCSS.7.RP.A.2A

What makes a graph proportional?

• Linear

• It goes through the origin

• Curvy line

• Linear and the line goes through the origin

Tags

CCSS.8.EE.B.5

Is the graph proportional or non proportional?

• proportional
• non proportional

Tags

CCSS.7.RP.A.2D

Which graph shows a proportional relationship?

• 
• 
• 
• 

Tags

CCSS.7.RP.A.2D

What is the constant of proportionality for this table?

• 1/9

• 9

• 8

Tags

CCSS.7.RP.A.2B

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = 1/2x

Tags

CCSS.6.EE.C.9

In the equation y = 14x, what is the constant of proportionality?

• y
• x
• 14

Tags

CCSS.7.RP.A.2B

Name the constant of proportionality.

• 8
• 16
• 6
• 3

Tags

CCSS.7.RP.A.2B