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Which of the following inequalities expresses the exact same inequality as -2y < -4x - 20 ?
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y > 2x + 10 |
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y < 2x - 10 |
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y > -2x - 10 |
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y < 2x + 10 |
Explanation
By dividing both sides of the formula by -2, we can get it in the same form as the answers. But, we must remember that multiplying or dividing an inequality by a negative number causes the inequality to flip. So dividing the formula -2y < -4x - 20 through by -2, causes it to become y > 2x + 10.
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