Question

Solve -3x + 1 > 4 and describe the graph of the solution.

x < -1; Open circle on -1, shading to the left

x < -1; Open circle on -1, shading to the right

x > -1; Open circle on -1, shading to the left

x > -1; Open circle on -1, shading to the right

Answer 1

have you solved the inequality...?

Answer 2

no.. :s

Answer 3

ok... so it just like solving an equation...

subtract 1 from both sides of the inequality, what do you get..?

Answer 4

subtract 1 from the -3 & 4?

Answer 5

well not quite

-3x + 1 > 4
-1 -1
---------------
-3x > 3

now the rule for inequalities when you divide( or multiply) by a negative is to reverse the inequality...

so if you divide both sides by -1 what do you think you will have..?

Answer 6

mm, hold on

Answer 7

Does the -3x go away?

Answer 8

well it -3 goes leaving x

so what happens with 3/-3 =

Answer 9

-1

Answer 10

does the sign (>) flip?

Answer 11

yes it does...

Answer 12

So is it the first answer?

Answer 13

so you have

x < -1

and yes thats the answer

Answer 14

yay, thank you! Omg, can you help me with a few more?

Answer 15

sorry, I have to go to school.

Answer 16

ahh, okay.. thank you anyways!