Порте & Short Answer (5 points
A school has a toy drive for a holiday in which students
Freshmen
bring in toys to be donated to charity. The number of
toys donated by juniors and seniors are summarized in Sophomore
the histograms.
Juniors
Is the standard deviation of number of toys donated
greater for seniors or juniors?
Seniors
55
50
45
Explain you answer...
45
number of juniors
T
number of seniors
0
0
10
number of toys donated to chanty
10
4 6
number of toys donated to charity

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

4+4+2x

or

2x+8

step-by-step explanation: