Question

Which is the equation to the line passing through points (2, –7) and (5, –1)?

y = 2x – 8

y = – 2x + 9

y = 2x – 11

y = – 2x + 6

Answer 1

well first find the slope

Answer 2

that will knock two answers off your list

Answer 3

y - (-7) = (-1-(-7))/(5-2) (x-2)
y+7 = 6/3 (x-2)
y+7 = 2(x-2)
y = 2x -4-7
y = 2x _11

Answer 4

He's doing it all together but basically hes doing this

\[m _{L}=(y _{2}-y _{1})/(x _{2}-x _{1})\]

Answer 5

then usng

\[y-y _{1}=m _{L}(x-x _{1})\]