Answer:
{(2,5), (3,7), (2, 9) } is not a function
Step-by-step explanation:
It's because the domain, which is the x value, has the same number twice, which is 2.
Answer:
x = 20
Step-by-step explanation:
→Add 1 to both sides
x / 4 = 5
→ Multiply both sides by 4
x = 20
Cones aren't constructed from polygons so it would be the first one
Answer:
(-2, 3)
Step-by-step explanation:
<u>Substitute 2x + 7 for y in y = -2x - 1</u>
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Add 2x to both sides
Subtract 7 from both sides.
Divide both sides by 4.
<u>Substitute -2 for x in y = 2x + 7</u>
- <u></u>

Simplify both sides.
Therefore, the answer is (-2, 3).
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