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bazaltina [42]
4 years ago
5

Please answer!! it’s 12:08 am and i’m trying to get these two questions done

Mathematics
1 answer:
Elena-2011 [213]4 years ago
4 0

Answer:

21 and 14

Step-by-step explanation:

The relationship between x and y is proportional thus the equation is

y = kx ← k is the constant of proportion

To find k use the ordered pair y = 84 when x = 28 , then

84 = 28k ( divide both sides by 28 )

k = 3

y = 3x ← equation of proportion

When x = 7 , then

y = 3 × 7 = 21 ← value required in top table

When y = 42 , then

42 = 3x ( divide both sides by 3 )

x = 14 ← value required in lower table

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Therefore the length of AB = |9 – (-7)|

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