Given that x and y vary directly, write the equation relating x and y if x = 3 when y = 24. a) y = 8x b) xy = 8 c) y = 8 x d) y = x 8 4)

A

given that y varies directly as x, then the relationship is

y = kx ← k is the constant of variation

To find k use the given condition x = 3 when y = 24

y = kx ⇒ k = = = 8

y = 8x

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation:

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v