3 years ago

PLEASE ANSWER ALL QUESTIONS 69 POINTS WILL MARK BRAINLIST

Mathematics

1 answer:

IRINA_888 [86]3 years ago

4 0

Answer:

See below

Step-by-step explanation:

Proportional relationship formula is:

y = kx

a) Use point (1, 3.5) to find k:

3.5 = k*1
k = 3.5

b) Unit rate is:

cm per min

c) Point (8, 28) indicates:

Water level of 28 cm after 8 min

d) x = 20, y =?

y = 3.5(20) = 70 cm

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