Question

What is the best first step for solving the given system using substitution while avoiding fractions?

3x+y=9
5x-3y=1

a. Solve for x in the first equation.
b. Solve for y in the first equation.
c. Solve for x in the second equation.
d. Solve for y in the second equation.

I think its A

Answer 1

Not quite. Usually you have slope-intercept and standard. We would want to change the first into slope-intercept. So we would solve for y.

Answer 2

You know it isnt c or d because either way, you get a fraction.

Answer 3

This is also due to the fact y is already to itself.

Answer 4

yeah, its actually b

Answer 5

I guess that is true, but they shouldn't have given 3x. because we all know 3 is divisible by 9. so yeah i guess i would say solve for y too

Answer 6

Solving for y would only require subtracting 3x from both sides in the 1st equation
So yeah B

Answer 7

oh yeah but then you would have y/3. so its definitely solving for y

Answer 8

thanks for helping me :)

Answer 9

No problem