Wednesday

January 28, 2015

January 28, 2015

Posted by **AMY** on Friday, November 12, 2010 at 5:39pm.

why the line y = -3 is a horizontal line.

describe how this line sits on the Cartesian (coordinate) plane.

I have tried a few thoughts on this. Firstly the horizontal sits on the y intercept. The graph y = b is a horizontal line. -3 is to the left of the origin which is 0. It follows the order of a number line. Negative numbers to the left and positive numbers to the right. This is all I have so far. Did I get close??

Your help is appreciated!!

- Linear Equation question -
**Henry**, Friday, November 12, 2010 at 9:21pmIf you followed a line that has a slant or slope, you'll notice that the

x and y co-ordinate are both changing.

If you followed a vertical line,only the y co-ordinate will change.If you

followed a horizontal line, the x co-

ordinate only will change. The y co-

ordinate will be constant(y = c). Therefore, when x is constant,its' a

vertical line; and when y is constant,

its' a horizontal line.

In your case, y = c = -3, and its' a hor. line. Since y is constant, it re-

mains the same no matter what value

you assign to x.

Use the following points to graph the

Eq.: y = -3.

(-4 , -3) , (-2 , -3) , (0 , -3),

(2 , -3).

I hope this will help.

- Linear Equation question -
**AMY**, Saturday, November 13, 2010 at 6:19amThank you Henry

**Answer this Question**

**Related Questions**

math - how do you the equation of a line in a coordinate plane? Hello Tim, if I ...

Math - Okay heres the pic. There is a plane with points B,D, and E.those [oints...

Geo Hons - Okay heres the pic. There is a plane with points B,D, and E.those [...

Geometry - Okay heres the pic. There is a plane with points B,D, and E.those [...

REPOST!PLZ HELP!ALGEBRA! - You give up too easily. How? I posted how to get the ...

Math 10 - 1 more question.... how would I make this equation perpendicular? The ...

Linear Algebra - Last number from the sample test! A plane P passes by the ...

Geometry HELP!!! - What happens to the graph of the line y = 3x -2 when the ...

algebra - In a coordinate plane, the points (2,4) and (3,-1) are on a line. ...

Math - This question makes reference to an orthonormal basis (i,j), and an ...