Topic D: Systems of linear equations and their solutions

Topic D includes lessons 24-30 and covers introduction to simultaneous equations, geometric interpretation of the solutions of a linear system, characterization of parallel lines, nature of solutions of a system of linear equations, another computational method of solving a linear system, word problems, and conversion between celsius and fahrenheit.

Systems of equations: trolls, tolls (1 of 2)
Systems of equations: trolls, tolls (2 of 2)
Testing a solution to a system of equations
Solutions of systems of equations
Systems of equations with graphing
Systems of equations with graphing: 5x+3y=7 & 3x-2y=8
Systems of equations with graphing: y=7/5x-5 & y=3/5x-1
Systems of equations with graphing: chores
Systems of equations with graphing
Systems of equations with elimination: 3t+4g=6 & -6t+g=6
Systems of equations with elimination: x+2y=6 & 4x-2y=14
Systems of equations with elimination: -3y+4x=11 & y+2x=13
Systems of equations with elimination: 2x-y=14 & -6x+3y=-42
Systems of equations with elimination: 4x-2y=5 & 2x-y=2.5
Systems of equations with elimination: x-4y=-18 & -x+3y=11
Systems of equations with elimination
Systems of equations with elimination: 6x-6y=-24 & -5x-5y=-60
Systems of equations with elimination challenge
Systems of equations with substitution: 2y=x+7 & x=y-4
Systems of equations with substitution: y=4x-17.5 & y+2x=6.5
Systems of equations with substitution: -3x-4y=-2 & y=2x-5
Systems of equations with substitution: 9x+3y=15 & y-x=5
Systems of equations with substitution
Systems of equations with substitution: y=-5x+8 & 10x+2y=-2
Systems of equations with substitution: y=-1/4x+100 & y=-1/4x+120
Systems of equations with elimination: apples and oranges
Systems of equations with elimination: TV & DVD
Systems of equations with elimination: King's cupcakes
Systems of equations with elimination: Sum/difference of numbers
Systems of equations with elimination: potato chips
Systems of equations with elimination: coffee and croissants
Systems of equations with substitution: coins
Systems of equations with substitution: potato chips
Systems of equations with substitution: shelves
Systems of equations word problems
Age word problem: Imran
Age word problem: Ben & William
Age word problem: Arman & Diya
Age word problems
Solutions to systems of equations: consistent vs. inconsistent
Systems of equations number of solutions: fruit prices (1 of 2)
Systems of equations number of solutions: fruit prices (2 of 2)
Systems of equations number of solutions: y=3x+1 & 2y+4=6x
Solutions to systems of equations: dependent vs. independent
Number of solutions to a system of equations graphically
Number of solutions to a system of equations graphically
Forming systems of equations with different numbers of solutions
Number of solutions to a system of equations algebraically
Comparing Celsius and Fahrenheit temperature scales
Converting Fahrenheit to Celsius