write an equation of the line that passes through the given points.
(-1,3), (2,9)

9-3
----
2+1 = 6/3=2

y=2x
is this correct?

Question

write an equation of the line that passes through the given points.
(-1,3), (2,9)

9-3
----
2+1 = 6/3=2

y=2x
is this correct?

maheshmeghwal9 · Answer

no u r not right
easy to check
if u put -1 in ur line's equation u must get 3 but u r getting -2 so add 5 to ur equation.

maheshmeghwal9 · Answer

actually u have missed the intercept part:/

maheshmeghwal9 · Answer

y=mx+c
y=2x+5.

maheshmeghwal9 · Answer

now this is correct:)

anonymous · Answer

could you arrange it so i could understand better..

anonymous · Answer

y - y1 = m ( x - x1)

maheshmeghwal9 · Answer

y = 2x is wrong
u must add intercept here
if u calculate easily in my first comment as i said above u would get intercept as 5
so ur equation will become 
y= 2x+5
now this is right:)
gt it ?

maheshmeghwal9 · Answer

http://www.wolframalpha.com/input/?i=y%3D+2x%2B5