# Westport

Districts Schools ## 2019 Item by Item Results for GRADE 10 MATHEMATICS

### Number of Students Included: 82

 Westport - GRADE 10 MATHEMATICS ITEM INFORMATION PERCENT OF DISTRICT'S POSSIBLE POINTS ITEM TYPE REPORTING CATEGORY STANDARD ITEM DESC POSSIBLE POINTS WESTPORT STATE DISTRICT-STATE DIFFERENCE 1 SR AF AI.A-APR.A.1 Multiply two polynomial expressions. 1 88% 89% -1 2 SR AF AI.F-IF.A.2 Evaluate a quadratic function for different input values. 1 57% 60% -3 3 SR GE GEO.G-C.A.2 Use an inscribed right triangle to determine the circumference of a circle. 1 45% 66% -21 4 SR GE GEO.G-CO.B.6 Identify transformations that would produce a congruent figure. 1 52% 58% -6 5 SA AF AI.A-REI.C.6 Solve for one variable in a system of linear equations algebraically. 1 61% 56% 5 6 SR AF AI.A-SSE.A.2 Factor a trinomial expression. 1 79% 86% -7 7 SA AF AI.A-REI.D.12 Graph the solution set of a linear inequality in two variables. 1 33% 37% -4 8 SR GE GEO.G-GPE.B.5 Identify an equation of a line perpendicular to a given line. 1 57% 57% 0 9 CR NQ AI.N-RN.A.2 Evaluate expressions involving radicals and rational exponents. 4 38% 40% -2 10 SR SP AI.S-ID.A.2 Compare measures of center and spread of two data sets. 1 59% 61% -2 11 SR GE GEO.G-GPE.B.6 Find the midpoint of a line segment graphed on a coordinate plane. 1 51% 59% -8 12 SA SP GEO.S-CP.B.6 Calculate conditional probabilities of real-world events from a description. 2 59% 54% 5 13 SR AF AI.A-REI.B.4 Find the solutions of a quadratic equation in one variable. 1 60% 64% -4 14 CR SP AI.S-ID.A.2 Interpret data in a data display and compare the measures of center of the data sets. 4 51% 51% 0 15 SR NQ AI.N-Q.A.2 Estimate the solution of a real-world problem using units. 1 44% 48% -4 16 SR GE GEO.G-SRT.A.3 Use similarity criteria to identify and name similar triangles. 2 66% 68% -2 17 SR AF AI.A-SSE.B.3 Factor a quadratic trinomial expression. 1 49% 58% -9 18 SA GE GEO.G-SRT.A.1 Graph a figure on a coordinate plane after a dilation. 1 44% 49% -5 19 SR NQ AI.N-RN.B.3 Consider and complete statements about operations with rational and irrational numbers. 2 43% 48% -5 20 SR AF AI.A-REI.B.3 Determine the solution set of a linear inequality in one variable. 1 56% 50% 6 21 SR GE GEO.G-SRT.C.6 Use a trigonometric ratio to determine a missing side length in a right triangle. 1 37% 62% -25 22 SR GE GEO.G-GMD.A.3 Calculate the volume of a right square pyramid. 1 50% 64% -14 23 SR SP AI.S-ID.B.5 Complete a two-way table that represents a real-world situation. 1 83% 84% -1 24 SR AF AI.F-IF.A.1 Identify a graph that does not represent a functional relationship. 1 51% 50% 1 25 SA GE GEO.G-CO.A.5 Graph a figure on a coordinate plane after a reflection. 1 80% 83% -3 26 SR GE GEO.G-GPE.B.7 Calculate the perimeter of a parallelogram shown on a coordinate plane. 1 61% 66% -5 27 SR GE GEO.G-GMD.A.3 Calculate the volume of a sphere. 1 71% 72% -1 28 SR AF AI.F-IF.C.9 Compare the properties of linear functions represented in different ways. 1 40% 53% -13 29 SA AF AI.A-SSE.A.1 Interpret part of an expression that represents a real-world situation. 1 63% 60% 3 30 CR GE GEO.G-CO.A.2 Describe transformations that create congruent and non-congruent images and determine the coordinates of the vertices of transformed figures. 4 46% 50% -4 31 SR AF AI.A-REI.A.1 Justify each step in the solution of a linear equation. 1 89% 84% 5 32 SR GE GEO.G-CO.C.11 Determine the number of sides of a regular polygon based on the measures of its exterior angles. 1 20% 48% -28 33 SA NQ AI.N-Q.A.1 Use dimensional analysis to equate actual distances and those on a map. 2 82% 83% -1 34 SR GE GEO.G-SRT.B.5 Use similar triangles to determine a missing side length. 1 52% 58% -6 35 CR AF AI.A-CED.A.1 Create exponential equations from a formula and use them to solve real-world problems. 4 37% 49% -12 36 SR GE GEO.G-SRT.C.8 Use the Pythagorean theorem to solve a real-world problem. 1 59% 73% -14 37 SA AF AI.F-LE.A.2 Identify the features of a linear function from values in a table and write an equation for another linear function shown on a graph. 2 43% 46% -3 38 SR AF AI.A-CED.A.2 Determine a system of two-variable equations based on a real-world situation. 1 70% 73% -3 39 SR GE GEO.G-CO.A.3 Identify a transformation that would carry a figure onto itself. 1 56% 56% 0 40 SR AF AI.F-LE.B.5 Interpret parameters of linear functions based on a real-world situation. 2 65% 67% -2 41 SR GE GEO.G-C.B.5 Determine the area of a sector of a circle. 1 51% 58% -7 42 SR SP AI.S-ID.B.6 Identify the method for drawing the line of best fit for data displayed in a scatter plot. 1 57% 74% -17