I give medals! Please help!

There are 52 blades of grass in 2 in^2 of lawn. There are 580 blades of grass in 8 in^2 of the same lawn. Which equation models the y blades of grass found in x in^2 of lawn?

y= 88x + 124
y= -88x - 124
y= -88x + 124
y= 88x - 124

Question

I give medals! Please help!

There are 52 blades of grass in 2 in^2 of lawn. There are 580 blades of grass in 8 in^2 of the same lawn. Which equation models the y blades of grass found in x in^2 of lawn?

y= 88x + 124
y= -88x - 124
y= -88x + 124
y= 88x - 124

mertsj · Answer

You have two points given.  Find the slope of the line.

hartnn · Answer

could you find the slope ? 
take these points 
x1,y1= 2,52
x2,y2=8,580
then use the formula 
$\large m=\dfrac{y_2-y_1}{x_2-x_1}$

anonymous · Answer

Okay, what do I do after that?

anonymous · Answer

@hartnn

hartnn · Answer

then you use point slope form of equation of lines,
y-y1 = m (x-x1)
where x1,y1 are same, 2,52
and m you had found out to be .. ?

anonymous · Answer

m= 11.44 right?

hartnn · Answer

umm...nopes
m= (580-52)/(8-2) =... ?
you did this, right ?

anonymous · Answer

OH, sorry. 88?

anonymous · Answer

@hartnn

hartnn · Answer

yes, m= 88
and could you find equation of line then ?

hartnn · Answer

sorry  for late replies.

phi · Answer

did you finish ?

hartnn told you

y-y1 = m (x-x1)
where x1,y1 are same, 2,52

you know m, you know x1  and y1  (from  (2,52) )
replace those variables with numbers 
what do you get ?