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suter [353]
3 years ago
9

How do you use benchmark to estimate 2.81 + 3.72

Mathematics
1 answer:
Luba_88 [7]3 years ago
7 0
Round 2.81 to 2.8 and 3.72 to 3.7. Add both together to get 6.5
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Answer: Choice A)  y = 2x

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===================================================

Explanation:

We can see this by noting that each y coordinate is simply doubled that of the x coordinate.

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So in general, x doubles to 2x to get the y coordinate. Therefore, y = 2x.

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Alternative method:

A more thorough step by step process would have us first finding the slope

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y = mx+b

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0 = b

b = 0 is the y intercept

We go from y = mx+b to y = 2x+0, which simplifies to y = 2x

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