wimpylilshrimpy
Answered

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PLZ HELP ASAP!! 100 points!!!

Are these examples of direct variation? Please explain

PLZ HELP ASAP 100 Points Are These Examples Of Direct Variation Please Explain class=

Sagot :

Eyadaqrabawi

Answer:

mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other. 

8 - direct variation Since the equation can be written in the form y=kx. , y varies directly with x and k. The constant of variation, k, is 3.25

9 - When solving for y, y=5x-9 so y doesn't vary directly with x.

y doesn't vary directly with x

10 - direct variation Since the equation can be written in the form y=kx, y varies directly with x and k. The constant of variation, k, is -2.4

mhanifa

Answer:

  • 8 and 10 - yes, 9 - no

Step-by-step explanation:

Direct variation formula:

  • y = kx, where k- variation coefficient

#8

  • 16.25 = 5*3.25, yes, same format as above

#9

  • y = 5x - 9, no, not same format as above

#10

  • y = -2.4x, yes, same format as above
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