7. Starting at 7:00 a. m., Lin spent a day hiking through a canyon. This graph shows her elevation (in meters) at some different times. Negative values of represent times earlier than noon, and positive values of represent times later than noon. a. What was Lin’s elevation at noon? Explain how you know. b. At 10:00 a. m., Lin’s elevation was 7 meters. Add this point to the graph. c. At 1:00 p. m., Lin was at sea level. Add this point to the graph. d. Did Lin’s elevation increase or decrease between 7:00 a. m. and 2:00 p. m.? Explain how you know. e. Lin climbed downward from 2:00 p. m. to 3:00 p. m. Add a point to the graph that shows her possible elevation at 3:00 p. m. Explain your reasoning.

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4

the answer is

d.

5.3066 m2

step-by-step explanation: