PLEASE HELP ILL GIVE BRAINLIEST AND FOLLOW using y=mx+b form

y=30x+1

Step-by-step explanation:

m= slope of line

slope=y2-y1/x2-x1

Take any two points

1200-300/40-10

900/30

30

Take any point and put y and x coordinates to find value of b

y=mx+b

1200=30x40+b

1200=1200+b

1200/1200=b

b=1

y=30x+1 (equation of line)

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.

the diver is 33 feet below the surface.

step-by-step explanation:

hope this