A quantity, t, varies inversely with a quantity, r. If t = 6, then r = 5.

Mathematics

1 answer:

soldier1979 [14.2K]3 years ago

5 0

Answer:

Step any explanation:

t & 1/r

t = k/r

When t =6 and r = 5

k = tr

k = 6×5

k = 30

Constant of proportionality is equal 30

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3 years ago

Use the graph of the function to find f(-2)

lesya692 [45]

Answer:

Answer D: f(-2) = 2

Step-by-step explanation:

To evaluate f(-2) we need to find what is the y-value that the graph shows for the x-value "-2".

To find such, we look for the value x = -2 on the horizontal (x) axis (located two units to the left of the origin of coordinates (0,0)), and from there, we investigate at what y-value (value on the vertical y-axis) a line that follows the vertical grid passing through x = -2, intercepts the graph of the function.

That is pictured with a red dot in the attached image. Notice that the y-value at which such intersection occurs is y = 2.

Therefore f(-2) = 2