Question

Which method would be the simplest way to solve the system?
y=1/2x
2x+3y=28
A. Graphing
B. Substitution
C. Elimination
D. Distributive

Answer 1

Substitution. Replace y with x/2 in the second equation and you can quickly solve for x.

Answer 2

I don't think they are expecting you to solve the system but just which method is the simplest.

But if they want a solution then:
Put y = x/2 in second equation:
2x + 3x/2 = 28
multiply throughout by 2
4x + 3x = 56
7x = 56
x = 8
y = x/2 = 8/2 = 4

x = 8, y = 4

Answer 3

Thank you!
Would this one be substitution too:
7x+5y=19
-7x-2y=-16

Answer 4

Elimination would be the simplest for the second problem because if you add the two equations, the +7x and -7x will cancel out leaving you with just y which can be easily solved and then you can solve for x.

Answer 5

Okay! Thanks!