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ch4aika [34]
3 years ago
11

the table shows the height of a plant as it grows. Which equation in point slope form gives the plants height at any time?

Mathematics
2 answers:
jek_recluse [69]3 years ago
8 0

Answer:

y - 21 = 7(x - 3)

Step-by-step explanation:

If we plot the points on a graph having time on x axis and plant height on y axis then the two points will be (3, 21) and (5, 35).

Let the equation of the line is y - y'= m(x - x')

where m = slope of the line

Now slope of the line joining these points 'm' = \frac{y-y'}{x-x'}

m = \frac{35-21}{5-3}

m = \frac{14}{2}

m = 7

Now the equation that passes through the point (3, 21) will be y - 21 = 7(x - 3)

Therefore, equation that represents the height of the plant at any time is y - 21 = 7(x - 3)

uysha [10]3 years ago
4 0
(3,21)(5,35)
slope = (35 - 21) / (5 - 3) = 14/2 = 7

possible answers are :
y - 21 = 7(x - 3)
or
y - 35 = 7(x - 5)
or
y - 49 = 7(x - 7)
or
y - 63 = 7(x - 9)

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