The data below are the temperatures on randomly
chosen days during a summer class and the number of
absences on those days. Which is the best predicted
value for y given x = 92? Assume that the variables x
and y have a significant correlation.
Temperature in 72 85 91 90 88 98 75 100 80-
Fahrenheit (x)
Number of
1 3 7 10 10 8 15 & 45 5
Absences )

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

inverse operation of addition

slope =   (y2 -y1) ÷ (x2 -x1)

slope = (0 -0) / (-5, -7)

slope = 0 / -12 = 0

the slope of the line is zero.   it is perfectly horizontal.

step-by-step explanation: