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iRubric: Graphing Linear and Proportional Equations rubric

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Graphing Linear and Proportional Equations Rubric Code: C23W4B5 By kmonahan07 Ready to use Public Rubric Subject: Math Type: Assessment Grade Levels: 6-8

Graphing Linear and Proportional Equations
	Poor 1 pts	Fair 2 pts	Good 3 pts	Excellent 4 pts
Number of Equations 3 pts	Poor Student graphed less than four linear equations.	Fair Student graphed four or five linear equations.	Good Student graphed six or seven linear equations.	Excellent Student graphed eight or more linear equations.
Types of Equations 3 pts	Poor Student did not graph any of the following: proportional equations, horizontal lines or vertical lines	Fair Student included one of the following: proportional equations, horizontal lines or vertical lines	Good Student included two of the following: proportional equations, horizontal lines or vertical lines.	Excellent Student included at least one proportional equation, at least one horizontal line, and at least one vertical line.
Intercepts of Equations 3 pts	Poor No equations were provided or all equations had the same y-intercept.	Fair Two of the linear equations have distinct y-intercepts (this can include the proportional equation).	Good Three of the linear equations have distinct y-intercepts (this can include the proportional equation).	Excellent At least four of the linear equations have distinct y-intercepts (this includes the proportional equation).
Technology Use 2 pts	Poor Desmos or a similar graphing tool was not used.	Fair Equations were not correctly input into Desmos or a similar graphing tool, so the equations did not represent the intended image.	Good All equations were input correctly into Desmos (or a similar graphing tool). The feature of restricting domain was not used for all functions.	Excellent All equations were input correctly into Desmos (or a similar graphing tool). The feature of restricting the domain for each function was used (e.g. {3<x<5} ).
Image Created 1 pts	Poor The set of lines do not create an image at all.	Fair It is difficult to tell what image the lines represent, and the image is not one that makes sense to be described by linear equations.	Good The set of lines represents an image, and the image is creative, but it is not one that makes sense to be described by linear equations (e.g. the sun since it would be best represented as a circle)	Excellent The set of lines obviously represents an image and is creative. The image chosen is one that makes sense to be described by a set of linear equations.