Mathematics
Grade-8
Easy

Question

Find the constant rate of change.

  1. 3
  2. -3
  3. 20
  4. Not a constant slope/Non-Linear

hintHint:

c o n s tan t space r a t e space o f space c h a n g e space equals fraction numerator c h a n g e space i n space o u t p u t over denominator c h a n g e space i n space i n p u t end fraction

The correct answer is: -3


    fraction numerator negative 3 over denominator 1 end fraction space i s space t h e space c o r r e c t space c h o i c e
c o n s tan t space r a t e space o f space c h a n g e space equals fraction numerator c h a n g e space i n space o u t p u t over denominator c h a n g e space i n space i n p u t end fraction
w h e n space i n p u t space equals space 0 space comma space o u t p u t space equals space 20
a n d space w h e n space i n p u t space equals space 1 comma space space o u t p u t space equals 17
c o n s tan t space r a t e space o f space c h a n g e space equals fraction numerator 17 minus 20 over denominator 1 minus 0 end fraction space equals fraction numerator negative 3 over denominator 1 end fraction space
t a k e space a n o t h e r space o u t p u t space a n d space i n p u t space
c o n s tan t space r a t e space o f space c h a n g e space equals fraction numerator 8 minus 14 over denominator 4 minus 2 end fraction equals fraction numerator negative 6 over denominator 2 end fraction space equals space fraction numerator negative 3 over denominator 1 end fraction
s o space c o n s tan t space r a t e space o f space c h a n g e space equals fraction numerator negative 3 over denominator 1 end fraction space i s space t h e space a n s w e r

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