Which equation is represented by the table?

x y (x, y)
0 –1 (0, –1)
1 4 (1, 4)
2 9 (2, 9)

A.
y = 3x + 3

B.
y = 5x – 1

C.
y = 3x – 4

D.
y = –3x + 3

Question

Which equation is represented by the table? 
 
x	y	(x, y)
0	 –1	(0, –1)
1	4	(1, 4)
2	9	(2, 9)
 
 
 A.
y = 3x + 3
 
 B.
y = 5x – 1
 
 C.
y = 3x – 4
 
 D.
y = –3x + 3

anonymous · Answer

Hey there! Let's find the equation, shall we?

anonymous · Answer

ok

anonymous · Answer

Do you know how to find the slope from 2 given points? :)

anonymous · Answer

no, i should have paid more attention in math class huh?

anonymous · Answer

Here's the formula:

$$\frac{ y_2-y_1 }{ x_2-x_1 }$$

where $$(x_1,y_1) ~and~(x_2,y_2)$$ are the two points

anonymous · Answer

You are given three points, you can choose any 2 points and you will get the same slope!

So which two points do want to choose?

anonymous · Answer

um, B?