Y=2x y=-1/2x+5 system of equations

Mathematics

1 answer:

dalvyx [7]4 years ago

5 0

Answer:

x=2, y=4 (as a point,) (2, 4) (last part is unnecessary unless you are graphing)

Step-by-step explanation:

Use substitution.

Substitute y for 2x.

Since y=2x, you can plug 2x into the place where y goes...

Instead of y=-1/2x+5

2x=-1/2x+5....Now solve

2.5x=5 (Sorry my computer cannot type fractions very clearly)

/2.5 /2.5 (dividing by 2.5 on both sides)

x=2

Now just plug x into any of the equations to find y (preferably the easier one).

y=2x becomes

y=2*(2)

y=4

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