Algebra I Concept Test # 5 – The Coordinate Plane Practice Test 1 3 1. a) Solve: 2 ≤ x + 2 < 3 Subtract − 2 − 2 − 2 1 3 0 ≤ x < 1 1 3 Multiply 3 • 0 ≤ x < 1 3 • • 3 0 ≤ x < 3 b) Graph: 1 2 3 4 5 6 −6 −5 −4 −3 −2 −1 © 2007-09 by S-Squared, Inc. All Rights Reserved.

Algebra I Concept Test # 5 – The Coordinate Plane Practice Test 2. The sum of 3 consecutive integers is 66. a) Write a variable equation for the given information. Assign variables: Let, x = the 1st integer x + 1 = the 2nd integer x + 2 = the 3rd integer x + x + 1 + x + 2 = 66 Simplify 3x + 3 = 66 b) Find the integers. The first integer is x 3x + 3 = 66 1st integer: 21 Subtract − 3 − 3 3x = 63 The second integer is x + 1 Divide 3 3 2nd integer: 22 x = 21 The third integer is x + 2 3rd integer: 23

Algebra I Concept Test # 5 – The Coordinate Plane Practice Test The perimeter(P = 2l + 2w) of a rectangle is 24 cm. The length is twice the width. Find the area (A = lw). Assign variables: Let, l = 2w w = w P = 24 Substitute into the perimeter formula. Simplify 24 = 2(2w) + 2(w) Find the area (A = lw). 24 = 4w + 2w A = (8)(4) Multiply 24 = 6w Divide A = 32 6 6 4 = w Area = 32 cm2 8 = l Find the length. The length is twice the width.

Algebra I Concept Test # 5 – The Coordinate Plane Practice Test 4. On the grid below, draw a coordinate plane and label the following: a) x – axis & y – axis a) x – axis & y – axis b) Quadrants b) Quadrants c) Origin c) Origin Coordinates: (0, 0) y – axis d) Plot the following ordered pairs: d) Plot the following ordered pairs: Quad II Quad I A( − 3, − 5) x – axis B( 1, − 3) C( 0, 3) Quad III Quad IV © 2007-09 by S-Squared, Inc. All Rights Reserved.

Algebra I Concept Test # 5 – The Coordinate Plane Practice Test 5. Identify the coordinates of the given points on the graph below and name the quadrant or axis where they lie. Coordinates Quadrant/ Axis A B C ( − 4, 3) Quad II ( 2, 1) Quad I ( 5, 0) x- axis

Algebra I Concept Test # 5 – The Coordinate Plane Practice Test 6. a) Create a table to find 3 ordered pairs that are solutions for the following linear equation: 1 5 y = x – 4 x y − 5 5 − 5 − 5 y = – 4 1 5 (0) y = – 4 1 5 (5) y = – 4 1 5 (−5) − 4 y = – 4 (−1) y = – 4 (0) y = – 4 (1) 5 − 3 y = − 3 y = − 5 y = − 4 b) Graph: Plot the following ordered pairs: (− 5, − 5) (0, − 4) (5, − 3)

Algebra I Concept Test # 5 – The Coordinate Plane Practice Test 7. Using the following equation: 4x + 2y = − 8 a) Solve for y. 4x + 2y = − 8 Subtract − 4x − 4x 2y = − 4x ─ 8 Divide 2 2 2 y = − 2x ─ 4 b) Find 3 ordered pairs that are solutions. y = − 2x ─ 4 x y − 1 1 ( − 1, − 2) y = − 2 ─ 4 (0) y = − 2 ─ 4 (−1) y = − 2 ─ 4 (1) − 1 − 2 ( 0, − 4) y = ─ 4 (− 2) y = ─ 4 (2) (0) y = ─ 4 − 4 (1, − 6) y = − 2 y = − 4 y = − 6 1 − 6

Algebra I Concept Test # 5 – The Coordinate Plane Practice Test 7. Using the following equation: 4x + 2y = − 8 c) Graph: Ordered pairs: Believe in yourself ( − 1, − 2) ( 0, − 4) (1, − 6)