Question

Which is the equation of the line?



A.
–2x + y = 6

B.
x – 2y = 6

C.
–3x + 6y = 6

D.
6x – 3y = 6

Answer 1

first get y by its self...
for each answer choice.

Answer 2

and then?

Answer 3

another approach
from the graph when x = 0 what is y when y = 0 what is x
this gives you 2 points on the line you can find the slope
change in y / change in x
now for any point (x, y) and one of the given point write the equation and see which choice matches what you have

Answer 4

A fast way would be to take the point: (6,0)
from the graph and substitute x=6 and y=0 into each answer choice to see which one gives you a true statement.

Answer 5

B.
x – 2y = 6
6 — 2•0 =?=6
6 = 6 true
Therefore x — 2y = 6 is the answer

Answer 6

You could also choose x = 0 and y = -3 from the graph,
notice both choices work and include 0 since it is fast and easy to work with ;-)