Friday

March 6, 2015

March 6, 2015

Posted by **Student** on Tuesday, May 28, 2013 at 2:07am.

f(x)= -x if x<0

4-2x if 0 <or= x<3

2x+1 if x >= 3

- Math/Algebra -
**Reiny**, Tuesday, May 28, 2013 at 8:44amWith a soft pencil and a good eraser, draw the following lines

y = -x , use (0,0) and (-4,-4) to sketch it

y = 4 - 2x , use (0,4) and (2,0) to sketch it

y = 2x + 1 , use (0,1) and (3,7) to sketch it

erase the overlapping lines, leaving only the parts in the given domains.

Make special note of the "transition" points, noting carefully if the point is included or excluded

e.g. for y = -x, the point (0,0) would be excluded but the point (0,4) would be included in y = 4-2x

To include a point, the common way is to draw it as a solid point, to exclude it, draw it as an open point

(like a little o )

**Answer this Question**

**Related Questions**

Pre Cal - a function f is defined as f(x)= square root of (x+4). a) identify the...

algebra - 2. The function f is defined as follows f(x)={4+2x if x<0 {x^2 if x...

Algebra - Use the function below to answer the following parts. 1/3x - 4 if -6 &...

algebra - 1 (a) A function passes through the points (0, -5), (1, 0), (2, 7). ...

Math - HELP PLEASE!!! I'm having some trouble with this question on my Maths hw...

Algebra II - I sketched the graph for this but I don't know how to find B and C...

math - Use a graph to determine whether the given function is continuous on its ...

MATH Graphing Domain - Consider the linear function with equation y = 3x + 5. ...

Algebra - Use the function below to answer the following parts. f(x) = 1/3x - 4 ...

Algebra (Last Question) - I have - to graph each relation - decide if it is a ...