Solving Systems of Linear Equations and Inequalities

Substitution

100

#6 Solve
y=2x
2x + y = 8

What is (2, 4)?

200

#9 Solve
x + 3y=-2
4x + 12y = 7

What is no solution?

300

#8 Solve
x - 5y = 2
4x - 20 y = 8

What is infinitely many solutions?

Elimination

100

#10 Solve
2x + 3y = 19
2x - 3y = 1

What is (5,3)?

200

#13. Solve
7x + 3y = 1
9x + 3y = -3

What is (-2,5)?

300

#11 Solve
6x + 4y = 20
4x - 2y = 4

What is (2,2)?

400

#14 Solve
2x - 3y = 23
3x + 5y = 6

What is (7, -3)?

How many solutions?

100

y=2x + 3
y=7x + 1

What is one?

200

y=2x - 1
y=2x + 3

What is no solutions?

300

y=3x + 8
2y=6x + 16

What infinitely many?