4.6457513110645907
-0.6457513110645907
Using the quadratic equation formula the values of x are: x = -2 - the square root of 5 and also x = -2 + the square root of 5
It is, in fact, an identity - which is an equation which is true for all values of the variable.
Which of the following is a disadvantage to using equations?
-4
10x + -9 = 59can be rewritten as10x - 9 = 59add 9 to both sides10x = 68divide both sides by 10x = 6.8
Using the quadratic equation formula the values of x are: x = -2 - the square root of 5 and also x = -2 + the square root of 5
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.
Which of the following is a disadvantage to using equations?
-4
Since no points were given, for any point (x,y), plug the x and y values of the point into the equation. If you get a contradiction, ie 5=3 or something similar, then the point does not lie on the graph.
At -7.
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
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)