Slope Intercept Form Worksheet
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3Test 1 Grading Rubric.
The following questions will be graded in the following manner:
Determine the slope and the y-intercept. Then graph the equation.
Points
Requirement
5
The student correctly writes the slope and y-intercept.
The student provides the correct graph.
4
The student correctly writes the slope or y-intercept, but not both.
The student provides the correct graph.
3
The student correctly writes neither the slope nor the y-intercept.
However, the student provides the correct graph.
2
The student correctly writes the slope and y-intercept.
However, the student provides an incorrect graph.
2
The student correctly writes the slope or y intercept, but not both.
The student’s graph is correct for his or her slope and y-intercept.
1
The student correctly writes the slope or y-intercept, but not both.
The student’s graph is correct for his or her slope and y-intercept.
0
The student correctly writes neither the slope nor the y-intercept.
The student’s graph is incorrect for the problem and for his or her slope.
Find the slope of the line through the given points.
Points
Requirement
5
The student correctly writes the slope.
4
The student finds an equivalent fraction for the slope,
but that fraction has not been fully simplified.
1
The student correctly writes the formula for finding slope.
However, the student calculates the slope incorrectly.
0
The student neither gives the correct slope
nor correctly identifies the correct formula to use.
Write the equation of the line in slope-intercept form with the given slope that passes through the given point.
Points
Requirement
5
The student writes the correct equation in slope-intercept form
and has shown all necessary work.
1
The student correctly writes the equation in point-slope form.
However, the student has not correctly written the equation in slope-intercept form.
0
The student does not correctly write the equation in point-slope form
(or slope-intercept form).
(a) Write the equation of the line in slope-intercept form that passes through the given points.
(b) Write the equation in standard form, Ax + By = C, where A, B, and C are integers and A > 0.
Points
Requirement
5
The student correctly answers part (a) and part (b) and has shown all necessary work.
4
The student correctly answers part (a) but not part (b).
1
The student correctly finds the slope
and correctly writes the equation in point-slope form.
However, the student has not correctly written the equation in slope-intercept form.
0
The student does not correctly write the equation in point-slope form
(or slope-intercept form or standard form).
Determine whether the given lines are parallel, perpendicular, or neither.
Points
Requirement
5
The student correctly writes both equations in slope-intercept form
and correctly identifies that the lines are parallel, perpendicular, or neither.
2
The student has a minor error when writing the equations in slope-intercept form
but correctly identifies the lines as parallel, perpendicular, or neither for his or her slopes.
0
The student does not write the equations in slope-intercept form.
The student may or may not have correctly written parallel, perpendicular, or neither.
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