The scatter plot below shows the relationship between the diameter (x), in mm, and mass f(x), in grams, of a berry:

Question

anonymous · Answer

Which of the following functions is best represented by the scatter plot? 

 f(x) = −0.4 + 4x
 f(x) = 0.4 − 4x
 f(x) = 4 − 0.4x
 f(x) = −4 + 0.4x

welshfella · Answer

The slope is positive (/)   Which means that the coefficient of x is positive
So which rules out 2 options  Which ones?

anonymous · Answer

B and C

welshfella · Answer

Right

anonymous · Answer

I put D as my answer 1 dont know if thats right...

welshfella · Answer

Try plugging in different values of x and f(x) and see if they fit

anonymous · Answer

yup

anonymous · Answer

can you help me with one more?

anonymous · Answer

A glass cylinder is completely filled with 50p4q2 cubic inches of salt solution. The jug has a base area of 10pq square inches. The height of the jug, in inches, is represented by the expression The quantity of 50 p to the fourth q squared all over 10 p q.

Which of the following simplified expressions represents the height of the jug in inches?

 5p^3q
 5p^4q^2
 5p^5q^3
 40p^3q

welshfella · Answer

Ok
X = 12 when f(x) the mass of the Berry) = 0.8

anonymous · Answer

attachment

welshfella · Answer

Try D
Fx = 0.8
The = -4+0.4*12 = 0.8

It fits

So D is correct

welshfella · Answer

Sorry I gotta go right now

anonymous · Answer

okay