Variations Flashcards
if the value of x increases, the value of y also increases and vice versa
direct variation
formula of direct variation
y=kx
how to get k (constant) in direct variation?
divide the given value of y to the given value of x to cancel out
y varies directly as the square of x
direct square variation
formula for direct square variation
y=kx^2
how to find k in direct square variation
divide given value y to the square of given value x to cancel out
if the value of x increases, the value of y decreases and vice versa
inverse variation
formula for inverse variation
y=k/x
how to find k in inverse variation
multiply y and x (cross multiplication of y/1 and k/x)
the value of x varies inversely as the square of y
inverse square variation
formula for inverse square variation
y=k/x^2
how to find k in inverse square variation
multiple the square of x to y
y varies directly as x and z
joint variation
formula of joint variation
y=kxz
how to find k in joint variation
multiply x and z then divide the product to y
y varies directly as x and inversely as z
combined variation
formula of combined variation
y=kx/z
how to find k in combined variation
cross multiply then divide to cancel
phone charging length to phone battery percentage (example of…)
direct variation
the more that you say the less i know (example of…)
inverse variation
