In a Physics lesson, Chantelle adds weights to a spring and carefully measures the extension. She finds that the weight,
y g is related to the extension, x cm by the formula
y = 0.5x + 1 for 0 ≤ x ≤ 20.
a Draw the graph of y against x for 0 ≤ x ≤ 20.
b Use this graph to find the
(i) weight for a 17 cm extension
(ii) extension produced by a 5 g weight.
c What would Chantelle’s formula predict for the spring’s
extension for a 1 kg weight? Comment on your answer.

sorry, i can't understand your question. will later if you describe more clearly!

: )

answer: i guess 5 units?

step-by-step explanation:

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.

step-by-step explanation:

sorry i just needed points for a quiz plz for give me