Question

Describe the graph of y=4 [x=2] on [0, 3). Be specific in your description.

Answer 1

There are three steps.

The steps are at 8 from 0 to 1, at 12 from 1 to 2, and at 16 from 2 to 3.

Closed circles are on the left side of each step, and open circles are on the right.

Explanation:

These are the answers Edge gives

Answer 2

Explanation:

Given that y=4 is the equation

This is on the interval [0,3]

Since y=4 for all x, we get

when x=0, y=4. when x =1, y=4 and so on.

In other words, if we connect (0,4),(1,4)...(3,4) we get a horizontal line parallel to x axis passing through the above points from x=0 to x=3

ii) x=2 on [0,3]

Here x is constant but y varies from 0 to 3

When y takes values from 0 to 3, x =2 always

Hence a vertical line placed parallel to y axis a a disance of 2 units from y axis