3 years ago

Solve the following inequalities and give the solutions in both set and interval notations.

1 answer:

8 0

4y + 3 > 23 subtract 3 from both sides
4y > 20 divide both sides by 4
y > 5

-2y > -2 divide both sides by -2 (the order changes)
y < 1

(-oo, 1) ∪ (5, oo)

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3 years ago

Read 2 more answers

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erica [24]

This is a more difficult one to explain. Let's start with the line to the right. It has a slope (m) of $\frac{-2}{2}$ = -1 and a y-intercept of +3 (continue the line to see where it crosses the y-axis). So, the equation of that line is: y = -x + 3 when x ≥ 2. This can also be written as y = 3 - x when x ≥ 2. The only option that has that equation is A.