These box plots show daily low temperatures for a sample of days in two different towns.
Town A
10
15
20
30
55
Town B
5
20
30
40
55
0
th
10
15
20
45
50
55
60
25 30 35 40
Degrees (F)
Which statement is the most appropriate comparison of the spreads?
O A. The interquartile range (IQR) for town A, 45°, is less than the IQR
for town B, 50°
O B. The interquartile range (IQR) for town A, 15°, is less than the IQR
for town B, 20°
O C. The interquartile ranges (IQRs) for towns A and B are both 30°.
O D. The standard deviation for town A, 15", is less than the standard
deviation for town B 20°

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form

look at photo