The equation below describes a proportional relationship between x and y. what is the constant of proportionality? use pencil and paper. explain why your answer is called the "constant of proportionality."

y=4.53x

the constant of proportionality is [ ]

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Which expression is equal to (f+g)(x)?

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?