zeros
values at which an equation equals zero are called roots,solutions, or simply zeros.
an x-intercept occurs when y=o
ex.) y=x squared - 4
0=(x-2)(x+2)
(-infinity,-2)(-2,2) (2,infinity)
That is an impossible equation, because it is stating that m has two values.
Find an equation of variation where y varies directly as x. One pair of values is y = 80 when x = 40
that would be limited to 3 and -3 for values of x
There is no property that justifies it. The equation is true for some values of x, not for others.
Generally, when we say a quadratic equation has no solutions, it means that the graph does not cross the x-axis at all.In other words, it means that there are no values for x when y equals 0 (because the line y=0 IS the x-axis.)Hope that helps.Jamz159
They are called the solutions or roots of the equations.
That is an impossible equation, because it is stating that m has two values.
They are called the "solutions" of the equation.
In math speak: Solving the equation means finding 'x' values that make the equation true. These 'x' values are called the roots of the quadratic.
It is, in fact, an identity - which is an equation which is true for all values of the variable.
-4
An equation that is always true is an identity.
It is called the DOMAIN!
There are no exclude values of the equation, as given.
10.
Find an equation of variation where y varies directly as x. One pair of values is y = 80 when x = 40
It is a quadratic equation and the values of x are: -1/2 and 6