For a direct variation equation the constant MUST be 0. Then the ratio of a pair of values of the two variables is the slope.
It is, in fact, an identity - which is an equation which is true for all values of the variable.
-4
It is a straight line equation in the form of: y = x+5
That is as far as you can go with that equation without knowing the values of "d," "h," or "m."
Find an equation of variation where y varies directly as x. One pair of values is y = 80 when x = 40
If P varies directly with q, r and s then P = kqrs, where k is a constant. As 70 = k x 7 x 5 x 4 = 140k : k = 70/140 = 1/2 The equation of joint variation is P = ½qrs.
For a direct variation equation the constant MUST be 0. Then the ratio of a pair of values of the two variables is the slope.
It is, in fact, an identity - which is an equation which is true for all values of the variable.
They are called the solutions or roots of the equations.
When two variables are related in such a way that the ratio of their values always remains the same, the two variables are said to be in direct variation. y=2x is direct variation y=x+2 is not direct variation
-4
If y and x are related inversely, then the equation for y can be said to be:y = k/xTo find the constant k, substitute 12 for y and 6 for x (a pair of values that are known to satisfy the equation).y = k/x12 = k/612 X 6 = k72 = kThe value of the variation constant k is 72.
There are no exclude values of the equation, as given.
10.
It is a quadratic equation and the values of x are: -1/2 and 6
Any variation is very sensitive to extreme values!