Posted by jan w on Sunday, August 1, 2010 at 2:30pm.
2x+15 >= 13 and 2x13 >= 5?
solve and graph
2x+15 >= 13
2x13 >= 5
what's the solution x >= ?
and how does this appear on a line graph/number line?

algebra  Damon, Sunday, August 1, 2010 at 3:35pm
2x>/=2
x >/= 1
2x>/= 8
x >/= 4
x = 4 and everything to the right of x = 4

algebra  Henry, Sunday, August 1, 2010 at 4:24pm
2X + 15 >= 13.
2X  13 >= 5
Add the 2 Eq.
4X + 2 >= 8
Solve for X
4X >= 6
X >= 3 / 2 >= 1 1/2.
Graph the solution:
1. Draw a filled in circle(dot) on the number line at 1 1/2. This means that X = 1 1/2 is a part of the solution.
2. Starting at the dot, draw a straight line to the right on the number line. Extend this line pass all
numbers on the right of the dot,
which means all real numbers greater
than 1 1/2 are a part of the solution.
If your inequality did not have an
equal sign (x > 1 1/2), the procedure
would have been exactly the same
except the circle would be left open
(o) meaning the 1 1/2 is not a part of
the solution. But all numbers above
1 1/2 is a part of the solution.
I hope this is helpful.
Answer This Question
Related Questions
 algebra  Solve the following rational inequality. Write the solution in ...
 algebra  Solve the following rational inequality. Write the solution in ...
 Math  1)Solve 3+2(1x)>6 or 2x+14<=8. Graph the solution set on a number ...
 Math  ( / means absolute value) Solve: 3+/2y1/>=1. Graph the solution set ...
 Calculus  The function g is defined for x>0 with g(1)=2, g'(x)=sin(x+1/x), ...
 Math  Solve the inequality. Then graph the solution on a number line. 16 is ...
 Algebra  Solve the conjunction 2<or=a+3<8 Here is my result :5<or = a...
 Algebra  Solve by graphing. Check your solution. y > 2 y > x + 2 Am I ...
 chemistry help meee  okay so I'm given a graph of a melting profile of a ...
 Calculus  Graph the function f(x)=x+4/x Graph the secant line that passes ...
More Related Questions