If each side of the equation is a fraction, then it is a proportion.
If it passes through the origin
No powers also, no x times y i.e. xy = 1 is not linear
All fractions are proportional to some other fraction.
some people being ugly and weird just kidding I'm only a third grader how should I know
You know if an equation is linear if it is a straight line. You can also know if the equation is y = mx + b where there are no absolute values nor exponents.
If it passes through the origin
No powers also, no x times y i.e. xy = 1 is not linear
You know an equation is quadratic by looking at the degree of the highest power in the equation. If it is 2, then it is quadratic. so any equation or polynomial of the form: ax2 +bx+c=0 where a is NOT 0 and a, b and c are known as the quadratic coefficients is a quadratic equation.
if somthing is proportional is will either be Multiplying or Diving
All fractions are proportional to some other fraction.
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They will be on the horizontal x axis of the graph (look for the x-intercepts).
We shouldn't know. Were just looking for an answer!!!!! We shouldn't know. Were just looking for an answer!!!!!
The equation of an inductor is ...di/dt = L / V... which means that the rate of change of current is proportional to voltage and inversely proportional to inductance.Set this up in a sinusoidal forcing circuit and solve the differential equation, or use phasors, and you get ...XL = 2 pi f L... which means that inductive reactance is proportional to both frequency and inductance by the factor of 2 pi.I have not included the derivation, because I don't know how to do it, and it does not seem necessary. If someone wants to provide one, please feel free to refine the answer.
You just know. Always truist your instinct.
That depends what you know about the sphere. For example, if you know the diameter, just divide it by 2 to get the radius.
If the graph is a straight line through the origin, sloping upwards to the right, then it is a proportional linear relationship.