Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to create a a system of equations with infinitely many solutions. Source: Mike

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## Equations of Perpendicular Lines

Directions: Using the integers -9 to 9 (excluding 0) at most one time each, fill in the blanks to create two distinct perpendicular lines. Source: Louise Pepper with answers from the students of Kings College Alicante, Spain

Read More »## Solving Equations with Variables on Both Sides

Directions: Using the digits 1 to 9, at most TWO times each, fill in the boxes to make an equation with no solutions. Source: Robert Kaplinsky

Read More »## Create a System of Equations, Given 1 Equation and the Solution

Directions: Write at least two linear equations so that the solution of the system of equations of that line and 4x + y = 8 is (3, -4) Source: Nanette Johnson

Read More »## System of Equations, Special Case Infinitely Many Solutions

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes so that there are infinitely many solutions to the system of equations. Source: Nanette Johnson

Read More »## Systems of Equations, Special Case No Solution

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes so that there is no solution to the system of equations. Source: Nanette Johnson

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