Graphing
Substitution
Elimination
Best Way to Solve the Problem
What You Learned Before
100
A system solved by graphing: y = 2x + 3; y = -x + 6
What is x = 1, y = 5, (1,5)?
100
A system solved by substitution: 4x + y = 24; y = 3x - 4
What is x = 4, y = 8, (4,8)?
100
A system solved by elimination: x + 4y = 16; 2x - 4y = -4
What is x = 4, y = 3, (4,3)?
100

Which method is best in solving the following system?

y=5x-3

y=-x+19

Graphing

100
Solve the multi-step equation: 35 + 5x = 65
What is an equation where x = 6?
200
A system solved by graphing: y = 3x - 2; y = -2x + 3
What is x = 1, y = 1, (1,1)?
200
A system solved by substitution: x + 3y = 36; x = 8y +3
What is x = 27, y = 3, (27,3)?
200
A system solved by elimination: 2x + 5y = 10; -2x + 2y = 4
What is x = 0, y = 2, (0,2)?
200

Which method is best in solving the following system?

5x+3y=10

-5x-2y=12

Elimination

200
Combine like terms and solve: -7x + 9x - 25 = 3
What is an equation where x = 14?
300

A system solved by graphing: y = x; y = -2x + 6

What is x = 2, y = 2, (2,2)?

300
A system solved by substitution: 2x + 4y = 52; y = x + 1
What is x = 8, y = 9, (8,9)?
300

A system solved by elimination: 3x+2y=9 ;2x+6y=6

What is x = 3, y = 0, (3,0)

300

Which method is best in solving the following system?

y=20x-2

x+y=0

Substitution

300
Find the slope of a line that goes through the points (3, 2) and (7,6).
What is a line with a slope of 1?
400

A system solved by graphing: y = 3x - 4; y = x + 2

What is x = 2, y = 2, (2,2)?

400
A system solved by substitution: 9x + 7y = 81; y = 3x + 3
What is x = 2, y = 9, (2,9)?
400
A system solved by elimination: 4x + 3y = 10; 2x - 3y = -4
What is x = 1, y = 2, (1,2)?
400

Which method is best in solving the following system?

3x+12y=0

x+2=y

Substitution

400

Solve: (x2)5 

What is x10.

500

A system solved by graphing: y = 2x + 3;  y = 3x + 4

What is x = -1, y = 1, (-1,1)

500
A system solved by substitution: 8x + 3y = 73; x = 6y - 10
What is x = 8, y = 3, (8,3)?
500
A system solved by elimination: 5x + 6y = 65; 2x - 6y = -16
What is x = 7, y = 5, (7,5)?
500

Which method is best in solving the following system?

y=3x-3

y=-4x

Graphing or Substitution

500
Write the equation of the line in point-slope form: (7,9) m = 3
What is y - 9 = 3(x - 7)?
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