Answer:
Step-by-step explanation:
On a multiple-choice math problem, if there are variables in the answer choices, this tells you that you can PLUG IN values (meaning choose your own numbers) for those variables, in order to simplify the question. ... Simply PLUG IN the value of your variable into the answer choices.
Answer:
Plug in values means to insert values where they are supposed to be
Step-by-step explanation:
For example you have the problem
y = -3x + 20
x = 5y + 12
To solve this problem we use substitution.
we "plug in the x values" in the y formula
y = -3(5y+12) +20
We use distributive property
y = -15y+12+20
combine like terms, we add 12 and 20
y = -15y+32
Combine like terms, we want y by itself, so we add 15 to both sides
16y = 32
Now we divide 16 from both sides
y = 2
Next step would be to use the y value and "plug it in the x expression"
x = 5(2) + 12
Combine like terms
x = 10+12
Combine like terms
x = 22
Now we write out our answer neatly
( 22, 2 )
x = 22
y = 2
