Which of the following graphs represents the equation y = 3x + 2?

A. Graph A
B. Graph B
C. Graph C
D. Graph D

Question

Which of the following graphs represents the equation y = 3x + 2?



 		A.	Graph A
 		B.	Graph B
 		C.	Graph C
 		D.	Graph D

anonymous · Answer

attachment

sloppycanada · Answer

You have the points right? Just chose a graph and plug in the coordinates for one.

welshfella · Answer

the slope of the graph is 3 (  because of the 3x) and the intercept on the y axis  = 2

anonymous · Answer

Therefore C

anonymous · Answer

I believe you understood the previous explanation offerred by welshfella. Just apply the slope of 3 and y intercept of 2 to get the answer. Notice that in C, when x=0 y=2, on the other hand when x=-3, y=-1 because 2-3=-1. jLet me know if you understand. I can go further into details if you choose.

usukidoll · Answer

I would assign x values for this equation... draw it on paper and compare it to the choices.

usukidoll · Answer

let x = -2,-1,0,1,-2

welshfella · Answer

to find the slope of the graph plug in the values of 2 points in the formula
y2 - y1  / x2 - x1  where (x,1y1) and (x2,y2) are the 2 points.

for graph C (x1,y1) = (-1.-1)  and (x2,y2) =  (0,2)
so for graph C we have (2 - (-1)) /( 0 - (-1)0  = 3/1 = 3