Question 150346
7x+2y=0

isolate y
2y=-7x
y=-7/2x


This is the equation for the line.
To get coordinates, plug in a value for either y or x and solve for the other variable.


Plug in 2 for x
y=-7/2(2)
y=-7
(2,-7)


Plug in 4 for x
y=-7/2(4)
y=-14
(4,-14)


Plug in 1 for x
y=-7/2(1)
y=-7/2
(1, -7/2)


Continue this pattern to discover some more points to plot on the line.  This graph verifies the points we have already come up with.

*[invoke describe_linear_equation 7, 2, 0]

Also, if you are asked if a certain point (set of coordinates) is a solution to the problem, you can either plug in into the equation for the line, or reference the graph of the line to see if that point is included.