Which of the following ordered pairs should be tested to determine which side to shade when graphing the inequality
2 answers:
Answer:
Option A.
Step-by-step explanation:
If we take an inequality y ≤ , shaded part will be below the line
.
But the question is, how to check that the shaded part lies below the line.
To check this we will take two ordered pairs, one above the line and second below the line.
Ordered pair which satisfy this inequality will be in the side of shaded region.
Therefore, Option A. will be the answer.
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Answer is a.
Answer:
The length of AB is units
Step-by-step explanation:
The rule of the distance between two points (x1, y1) and (x2, y2) is
∵ The endpoints of AB are (-4, 5) and (2, -7)
→ Let point (-4, 5) be (x1, y1) and point (2, -7) be (x2, y2)
∴ x1 = -4 and y1 = 5
∴ x2 = 2 and y2 = -7
→ Substitute them in the rule above to find the length of AB
∵
∴
∴
∴ The length of AB is units