Question

A biologist created the following graph to show the relationship between the temperature of water (x), in degrees Celsius, and the number of insect larvae (y) in the water:
graph of y equals minus 2 times the square of x plus 20 times x plus 400

What do the x-intercepts of the graph represent? (1 point)


There were 20 larvae at 0 degrees Celsius.
There were 10 larvae at 0 degrees Celsius.
The water has no larvae at −10 degrees Celsius and 20 degrees Celsius.
The water has maximum larvae at −10 degrees Celsius and 20 degrees Celsius.

Answer 1

Answer:

The water has no larvae at −10 degrees Celsius and 20 degrees Celsius.

Step-by-step explanation:

the points are (-10, 20) so this represents larvae count in the water, which in none.

Your answer is D. The water has no larvae at −10 degrees Celsius and 20 degrees Celsius.

Answer 2

Temperature of water (x)
number of insect larvae (y)

   x    y
-10   0
-05   250
   0   400
   5   450
 10   400
 15   250
 20   0

The x-intercepts of the graph (-10 and 20) represents The water has no larvae at −10 degrees Celsius and 20 degrees Celsius.