\(y\)-int (\(b\)): \(-1\)
Slope (\(m\)): \(-\frac{1}{3}\)
Equation:
\(y = -\frac{1}{3}x - 1\)
2 Solution
x y
\(y\)-int (\(b\)): \(-2\)
Slope (\(m\)): \(\frac{1}{4}\)
Equation:
\(y = \frac{1}{4}x - 2\)
3 Solution
x y
\(y\)-int (\(b\)): \(-4\)
Slope (\(m\)): \(2\)
Equation:
\(y = 2x - 4\)
4 Solution
x y
\(y\)-int (\(b\)): \(3\)
Slope (\(m\)): \(\frac{1}{4}\)
Equation:
\(y = \frac{1}{4}x + 3\)
5 Solution
x y
\(y\)-int (\(b\)): \(3\)
Slope (\(m\)): \(-4\)
Equation:
\(y = -4x + 3\)
6 Solution
x y
\(y\)-int (\(b\)): \(4\)
Slope (\(m\)): \(-3\)
Equation:
\(y = -3x + 4\)
7 Solution
x y
\(y\)-int (\(b\)): \(-2\)
Slope (\(m\)): \(\frac{1}{5}\)
Equation:
\(y = \frac{1}{5}x - 2\)
8 Solution
x y
\(y\)-int (\(b\)): \(-4\)
Slope (\(m\)): \(-7\)
Equation:
\(y = -7x - 4\)
Page 2 of 2 Answer Key • Writing Linear Equations Teacher Resource • Linear Equations Practice
Part 2: Identify the Translation Rule from Pre-Image to Image
Name:
Date:
Period:
Score:
FOCUS Notice horizontal or vertical only shifts (where \(h=0\) or \(k=0\))
Pre-Image: Black line, letters without primes Image: Blue line, letters with primes \(' \)
6 \(\triangle GHI \to \triangle G'H'I'\)
Select one rule
x y H G I H' G' I'
A 5 units right B 6 units up C 2 units right, 1 up D 3 units right, 1 up
Rule: \((x, y) \to (\text{\underline{\hspace{1.2cm}}}, \text{\underline{\hspace{1.2cm}}})\)
7 \(\triangle EFG \to \triangle E'F'G'\)
Select one rule
x y F E G F' E' G'
A 4 units left, 2 up B 4 units left C 4 units left, 3 up D 3 units left, 1 up
Rule: \((x, y) \to (\text{\underline{\hspace{1.2cm}}}, \text{\underline{\hspace{1.2cm}}})\)
8 \(\triangle QRS \to \triangle Q'R'S'\)
Select one rule
x y Q R S Q' R' S'
A 4 units right, 1 down B 4 units right, 7 down C 4 units right, 5 down D 5 units right, 6 down
Rule: \((x, y) \to (\text{\underline{\hspace{1.2cm}}}, \text{\underline{\hspace{1.2cm}}})\)
9 \(\triangle RST \to \triangle R'S'T'\)
Select one rule
x y R S T R' S' T'
A 3 units right, 1 down B 2 units right C 4 units right, 1 down D 1 unit left
Rule: \((x, y) \to (\text{\underline{\hspace{1.2cm}}}, \text{\underline{\hspace{1.2cm}}})\)
10 \(\triangle QRS \to \triangle Q'R'S'\)
Select one rule
x y Q R S Q' R' S'
A 2 units left, 7 up B 3 units left, 7 up C 1 unit left, 1 down D 4 units left, 2 up
Rule: \((x, y) \to (\text{\underline{\hspace{1.2cm}}}, \text{\underline{\hspace{1.2cm}}})\)
Coordinate Rule Extension & Application Apply the rule algebraically
Extension A: Point \(A(5, -2)\) is translated under the rule from Problem 1.
New coordinates: \(A'(\text{\underline{\hspace{1.2cm}}}, \text{\underline{\hspace{1.2cm}}})\)
Extension B: Point \(B(-3, 6)\) is translated under the rule from Problem 8.
New coordinates: \(B'(\text{\underline{\hspace{1.2cm}}}, \text{\underline{\hspace{1.2cm}}})\)
Page 2 of 2 • Geometric Transformation Rules Check: Apply the rule to every vertex to verify your answer!
Page 1 of 2 Answer Key • Geometric Translation Rules Teacher Resource • Coordinate Transformations
TEACHER ANSWER KEY
Part 2: Solutions & Extension Applications (Problems 6–10)
Total Points 10 Problems (20 Pts)
Standard CCSS 8.G.A.1 / HSG-CO.A.2
Scoring: 1 pt for multiple choice; 1 pt for coordinate rule; 2 pts for Extension questions Green highlights indicate correct answers
6 \(\triangle GHI \to \triangle G'H'I'\)
Answer: A
x y H G I H' G' I'
A 5 units right
B 6 units up
C 2 units right, 1 up
D 3 units right, 1 up
Rule: \((x, y) \to (x + 5, y)\)
7 \(\triangle EFG \to \triangle E'F'G'\)
Answer: A
x y F E G F' E' G'
A 4 units left, 2 up
B 4 units left
C 4 units left, 3 up
D 3 units left, 1 up
Rule: \((x, y) \to (x - 4, y + 2)\)
8 \(\triangle QRS \to \triangle Q'R'S'\)
Answer: C
x y Q R S Q' R' S'
A 4 units right, 1 down
B 4 units right, 7 down
C 4 units right, 5 down
D 5 units right, 6 down
Rule: \((x, y) \to (x + 4, y - 5)\)
9 \(\triangle RST \to \triangle R'S'T'\)
Answer: B
x y R S T R' S' T'
A 3 units right, 1 down
B 2 units right
C 4 units right, 1 down
D 1 unit left
Rule: \((x, y) \to (x + 2, y)\)
10 \(\triangle QRS \to \triangle Q'R'S'\)
Answer: D
x y Q R S Q' R' S'
A 2 units left, 7 up
B 3 units left, 7 up
C 1 unit left, 1 down
D 4 units left, 2 up
Rule: \((x, y) \to (x - 4, y + 2)\)
Coordinate Rule Extension Solutions & Work 2 Points Each
Extension A: Point \(A(5, -2)\) under rule \((x - 3, y - 2)\):
\(x' = 5 - 3 = 2\), \(y' = -2 - 2 = -4\)
Answer: \(A'(2, -4)\)
Extension B: Point \(B(-3, 6)\) under rule \((x + 4, y - 5)\):
\(x' = -3 + 4 = 1\), \(y' = 6 - 5 = 1\)
Answer: \(B'(1, 1)\)
Page 2 of 2 Answer Key • Geometric Translation Rules Teacher Resource • Coordinate Transformations