How do you solve and graph #3x>=15#?

1 Answer
Jul 31, 2016

Answer:

#x>=5#

#x# assumes all the values that are 5 or higher

Explanation:

Divide both sides by 3 giving

#3/3x>=15/3#

#1xx x>=5#

#x>=5#

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#color(blue)("A note about drawing the graph")#

Just for a moment, suppose that the answer was #x>5#

This means that #x# can never actually take on the value of 5. It is always a higher value no matter how small the difference.

In this case the line plotted would be a dotted line

Now consider the actual answer of #x>=5#

This means that #x# can actually assume the value of 5 so you would draw a solid line

Tony B