Exercise #1: In each case below, a pair of values has been given for two proportional variables. For each do the following: (1) give an equation for y in terms of r and (2) find the missing value
for y using that equation.
(a)
x= 4, y = 12
(b)
x=10, V= 5
(c)x=6,y=10
+=2, y=?
x=16, y=?
r =9, V=?

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

What is the y-intercept of the line given by the equation