How do you graph the inequality 6(y+1)< -x?

1 Answer
May 30, 2016

Supporting Brian's solution

Just another way of showing the inequality and a tip about method.

Explanation:

color(brown)("You can manipulate an inequality the same way you do an equation.") Just be mindful of this (by example and using numbers to make my point), suppose we had
-3< 4

If we multiply by (-1) but do not change the inequality we have

+3<-4 color(red)(" This is false!")

Be mindful of what the inequality is doing.

We should have had: (-1)(-3<4) -> color(green)(3 > -4 )
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
color(blue)("Solving your question")

Given:

6y+6<-x

Subtract 6 from both sides

6y<-x-6

Divide both sides by 6

6/6 y<-x/6-1

But 6/6=1

y<-x/6-1

Tony BTony B