Question

1.How many solutions are there to the following system of equations? 2x + 6y = 4 5x + 15y = 10
A.2
B.infinitely many
C.0
D.1

2.How many solutions are there to the following system of equations?

3x + 7y = –10
15x + 35y = –45

A.2
B.infinitely many
C.0
D.1

4.Use the substitution method to solve the following system of linear equations:

2x + 2y = 10
x = –y + 5

A.There are an infinite number of solutions.
B.The solution is (4, –1).
C.The solution is (2, –3).
D.There is no solution.

Answer 1

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