The table shows the total number of cupcakes y Lucas plans to buy if x guests are coming to his birthday party. Using the function rule shown by the table, what will the dependent variable be when the independent variable is 9?

Question

anonymous · Answer

attachment

anonymous · Answer

:D

anonymous · Answer

^

yttrium · Answer

Do you know what an independent and dependent variables are?

anonymous · Answer

An independent variable is the variable that is manipulated in an expirement, study or math problem. A dependent variable is the observed result of manipulating the independent variable in an expirement, study or math problem.

anonymous · Answer

I read that off a website

yttrium · Answer

So what do you think is the independent variable in the table, the x or the y?

anonymous · Answer

X

yttrium · Answer

so 9 is your x, right? :)

anonymous · Answer

yes

yttrium · Answer

So, what you need to do to solve for y is an equation therefore? You get it?

anonymous · Answer

I dont uderstand the last part of how to solve for y as an equation

yttrium · Answer

I mean for example.
y = 2x + 1, you know the x as 9. So to solve for y, you'll just substitute it into the equation. Get it?

anonymous · Answer

OK so the answer should be 18 or am i wrong?

yttrium · Answer

Just tell me how did you get 18. :)

anonymous · Answer

ok

anonymous · Answer

I added the next step in the process which was 9 then the y part would have to be 18

yttrium · Answer

Okay. hahah :)

anonymous · Answer

it was an easy way to do it haha

yttrium · Answer

hahahaha