Anna is hiking in a canyon. the inequality statements compare the elevations of the hiking trail at three different points.

–21 ft < –18 ft

−18 ft < 10 ft

which statements comparing the elevations are true?

select each correct statement.

an elevation of –18 ft is higher than an elevation of 10 ft.
an elevation of –21 ft is lower than an elevation of –18 ft .
an elevation of is 10 ft is lower than an elevation of –21 ft .
an elevation of –18 ft is higher than an elevation of –21 ft .

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

answer: 7

step-by-step explanation: