Question

For the following system, if you isolated y in the first equation to use the Substitution Method, what expression would you substitute into the second equation?

4x − y = 8
2x + 3y = 9

8 − 4x

8 + 4x

−8 + 4x

−8 − 4x

Answer 1

@mathstudent55

Answer 2

@mathstudent55

Answer 3

C

Answer 4

ok thsnk you

Answer 5

oh wait

Answer 6

yes its C

Answer 7

We need to solvve the first equation for y:

4x - y = 8

Subtract 4x from both sides:

-y = -4x + 8

Divide both sides by -1:

y = 4x - 8 or y = -8 + 4x

Option C

Answer 8

Systems of equations with different slopes and different y-intercepts have no solutions.

Always

Sometimes

Never


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Question 3 (Multiple Choice Worth 4 points)

[6.01] Systems of equations have one solution.

Always

Sometimes

Never

Answer 9

@mathstudent55

Answer 10

@mathstudent55

Answer 11

Never
Sometimes