Worksheets · Pre-Algebra

Proportional relationships worksheet

y is proportional to x when y divided by x gives the same number every time. That number is the constant of proportionality, k, and the equation is y = kx. A table where y climbs by a fixed amount but does not start at zero is linear, not proportional.

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Pick more than one for a sheet that mixes them.

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

Sigma Prep · sigmaprep.io/worksheets

Name

Proportional Relationships

Date Period

Use each table.

  1.  extIsy extproportionaltox ext?x681012y45607790
  2.  extFindtheconstantofproportionalityx2468y7142128
  3.  extWritetheequationforthetablex2468y5101520
  4.  extIsy extproportionaltox ext?x681012y33445566
  5.  extFindtheconstantofproportionalityx681012y33445566
  6.  extWritetheequationforthetablex12243648y336699132
  7.  extIsy extproportionaltox ext?x1234y12243648
  8.  extFindtheconstantofproportionalityx3579y30507090
  9.  extWritetheequationforthetablex1357y10305070
  10.  extIsy extproportionaltox ext?x12202836y4575105135
  11.  extFindtheconstantofproportionalityx12243648y336699132
  12.  extWritetheequationforthetablex12162024y3456
  13.  extIsy extproportionaltox ext?x12243648y336699132
  14.  extFindtheconstantofproportionalityx4122028y154575105
  15.  extWritetheequationforthetablex1357y11335577
  16.  extIsy extproportionaltox ext?x281420y94275108
  17.  extFindtheconstantofproportionalityx8162432y6121824
  18.  extWritetheequationforthetablex1234y10203040
  19.  extIsy extproportionaltox ext?x2345y24374860
  20.  extFindtheconstantofproportionalityx481216y1234

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

Sigma Prep · sigmaprep.io/worksheets

Name

Proportional RelationshipsAnswer keyVersion 1

Date Period

Use each table.

  1.  extIsy extproportionaltox ext?x681012y45607790No
  2.  extFindtheconstantofproportionalityx2468y7142128k=72
  3.  extWritetheequationforthetablex2468y5101520y=52x
  4.  extIsy extproportionaltox ext?x681012y33445566Yes, k=112
  5.  extFindtheconstantofproportionalityx681012y33445566k=112
  6.  extWritetheequationforthetablex12243648y336699132y=114x
  7.  extIsy extproportionaltox ext?x1234y12243648Yes, k=12
  8.  extFindtheconstantofproportionalityx3579y30507090k=10
  9.  extWritetheequationforthetablex1357y10305070y=10x
  10.  extIsy extproportionaltox ext?x12202836y4575105135Yes, k=154
  11.  extFindtheconstantofproportionalityx12243648y336699132k=114
  12.  extWritetheequationforthetablex12162024y3456y=14x
  13.  extIsy extproportionaltox ext?x12243648y336699132Yes, k=114
  14.  extFindtheconstantofproportionalityx4122028y154575105k=154
  15.  extWritetheequationforthetablex1357y11335577y=11x
  16.  extIsy extproportionaltox ext?x281420y94275108No
  17.  extFindtheconstantofproportionalityx8162432y6121824k=34
  18.  extWritetheequationforthetablex1234y10203040y=10x
  19.  extIsy extproportionaltox ext?x2345y24374860No
  20.  extFindtheconstantofproportionalityx481216y1234k=14

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

How to do these

Find the constant of proportionalityx246y61218

  1. Divide y by x in any column.
  2. 6 over 2 is 3, and 12 over 4 is 3 as well.

The answer is k=3.

Where students go wrong

Testing one column and stopping. One pair always divides to something; proportional means every pair divides to the same thing.

Also called constant of proportionality, y = kx, proportional tables or direct proportion.

What you can put on this worksheet

Proportional or not, from a table
 extIsy extproportionaltox ext?x25811y10254055 Yes, k=5
The constant of proportionality
 extFindtheconstantofproportionalityx25811y10254055 k=5
The equation y = kx from a table
 extWritetheequationforthetablex25811y10254055 y=5x

Questions about these worksheets

Yes. Every proportional relationships sheet is free to print and free to download as a PDF. There is no account to make, no email to hand over and no limit on how many you take.

Yes. The answer key prints on a second page, and you can choose whether it shows each question beside its answer or just the answers in a list.

Yes. Print straight from the page, or download the PDF and print that. The sheet is laid out for paper rather than squeezed off a screen, so there is room to work under each question, and the answer key comes out on its own page.

Pre-Algebra is usually taken around 7th or 8th grade, though schools vary and plenty of students meet it earlier or later. Pick the difficulty rather than the grade: the easy level suits a first lesson on it, the hard level suits review before a test.

Yes, as many as you like. The questions are built fresh each time rather than picked from a fixed set of files, so pressing Generate gives a new sheet. That is what you want for a second class, a retake, or two students sitting next to each other.

That is the closest comparison, and Kuta Software is good software. It is also paid software you install on a computer. These worksheets run in a browser tab for free, with no account and nothing to install. Like Kuta, the proportional relationships questions are generated when you ask for them rather than pulled from a fixed set of files, so two classes never get the same sheet, and the answer key comes with it.

Yes. There are three levels, and you can tick more than one for a sheet that mixes them, in which case the questions come out easiest first. The harder levels are not just larger numbers: they ask for something the easy ones do not.

You pick from 3: proportional or not, from a table, the constant of proportionality and the equation y = kx from a table. Tick as many as you want and set how many of each, or let it spread them evenly.

Testing one column and stopping. One pair always divides to something; proportional means every pair divides to the same thing.