After students have learned slope and y-intercept identification from an equation in slope intercept form, you can use these playing cards as a fun way to review. I use them to play "go fish" with either slope or y-intercept. There are four cards that share the same slope number and four different cards that share the same y-intercept number. Have students use the "go fish" rules to search for cards that share the same slope. Then replay the game searching for cards that share the same y-intercept.
My cards were laminated and I put a picture of a minion on the back to make them feel more authentic.