Asked by sharon
8-3 greater than 4-2y
Answers
Answered by
Ms. Sue
8-3 greater than 4-2y
5 > 4 - 2y
1 > -2y
- 1/2 > y
5 > 4 - 2y
1 > -2y
- 1/2 > y
Answered by
Damon
5 > 4 - 2 y
1 > -2 y
divide by -2, when you multiply or divide by a negative, change direction of arrow
- 1/2 < y
so
y > -1/2
now check that by picking some y which is greater than (to the right of on number line) -1/2
like maybe -1/4
8 - 3 > 4 - 2(-1/4) ????
5 > 4 + 1/2 yes
1 > -2 y
divide by -2, when you multiply or divide by a negative, change direction of arrow
- 1/2 < y
so
y > -1/2
now check that by picking some y which is greater than (to the right of on number line) -1/2
like maybe -1/4
8 - 3 > 4 - 2(-1/4) ????
5 > 4 + 1/2 yes
Answered by
Damon
Ms Sue, negative divide changes arrow direction.
Answered by
Ms. Sue
Oops! Thanks, Damon!
:-)
:-)
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