Question

Which graph represents the direct variation equation y = 2x?

Answer 1

There isn't an option for which graph, so I can't give you a direct example. However, I can tell you the points the graph will have.

If y = 2x, that means that the points on the graph's line will be (x, 2x). To figure out which points, you can simply pick a random number as x and multiply by 2.

For instance: 2 • 2 = 4, so one point is (2, 4)
                      2 • 3 = 6, so another point is 3, 6)
                      2 • 4 = 8, so one more point is (4, 8)

The y value always equals twice or 2 times the x value

Answer 2

Answer with explanation:

The equation of line in two variable are:

 →   y =2 x

Put, x=0, gives, y=0.

For, x=1, y=2

For, x=2, y=4

For, x=3, gives, y=6.

Plotting the points in coordinate plane , that is in x y plane,and joining them and producing them from both ends ,will give the equation of line, y=2 x, representing Direct variation.