Question

Timmy created a function table using the equation y = 4x.
Which table is correct?
A. X Y
2 6
4 10
8 12
10 14
12 16

B. X Y
2 7
4 11
8 13
10 15
12 17

C. X Y
2 8
4 16
8 32
10 40
12 48

D. X Y
2 6
4 12
8 24
10 30
12 36

Answer 1

@mathstudent55

Answer 2

I think between A D

Answer 3

but probably wrong

Answer 4

For A,D --> 2*4 = ??
For B --> 2*4 = ??,
We don't have to do to many calculations to narrow it down.

Answer 5

@mathstudent55

Answer 6

Take a few x values from each table and plug them into the equation y=4x and see what you get for y.

Answer 7

I thought I knew this but not sure now

Answer 8

Look at A, if x=2, what does Timmy's function say y is equal to? f(2) = ??, and is this value equal to 6?

Answer 9

y=4(x) ----> so if x = 2 ---- > y=4(2)=8.

Answer 10

And 8 isn't 6.

Answer 11

would A be the answer

Answer 12

No not A. For example if x=5 and your equation is y=4x then you will do y = 4(5) , y=20. So what you need to do take least 1 x value from each table and do what I just did in the example. If the y values match in one of the tables based on x values then can figure which table will match the result from this equation.

Answer 13

C

Answer 14

That is correct.

Answer 15

yes, C is correct, because for each x value in the table, the y value is 4 times the x value.

Answer 16

cool thanks