If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

### Course: 7th grade>Unit 1

Lesson 2: Compare and interpret constants of proportionality

# Comparing constants of proportionality

Working example comparing constants of proportionality.

## Want to join the conversation?

• if anyone reads this have an excellent day
• awww you so nice
• Hi! Here is some practice to help you succeed.

Which table has a proportionality of 3?

A

x y
1 2
2 3
3 4
4 5

B

x y

5 15
6 18
7 21

C

x y

1 5
3 15
5 25

Please upvote this so that others can practice too. If there are any problems, please notify me; I a just a learner like you.

Edit- Please do not read the comments until you answer the question. Have a good day!
• It's B
• Sal: "one point half"
Me: "I love these videos."
Oh Sal, you slay me. I shall remember the one point half. -^^-
• who else doesnt pause the video :)
• Guys, who here likes Khan Academy? I know I sure do!
• I don't lol.
• Great video.

Also who here likes soup

my fav food
• why is it 1 cupcake for \$2? if d=2c. wouldn't it be 2 cupcakes for \$1? we could assume the is a 1 before the d, so 1d=2c.
• The coefficient of "d" is 1. But that doesn't tell you that there is d=\$1 when c=2 cupcakes. use the equation. If c=2 cupcakes, then: d = 2(2) = 4
So 2 cupcakes costs \$4. The ratio of 1 cupcake to \$2 if you reduce the ratio.

Hope this helps.
• why is math so boreing
• It will be way more fun when you understand it and actually take time to learn it.