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Is it true that if two variables are not linearly correlated then they are not related?
false they can be related with quadratic equation as well
How does the quadratic function related to your daily life?
The quadratic equation has many application related to resolving and modelling daily life problems. two examples are in archery and rifle sports. The trajectory of the projectile can follow a ballistic arc. The arc itself can be explained and graphically illustrated by the quadratic equation.
When is an equation not quadratic?
When it has no squares (exponent of 2).If an equation of one variable can be rearranged into a polynomial a*x^2 + b*x + c = 0, where x is the variable, and [a,b, & c] are constants and a does not equal zero, then it is a quadratic equation.If it has more than one variable, or higher powers of the variable x, then it is not a quadratic equation. See related link.
What is the third step in solving this equation by completing the square?
Completing the square is one method for solving a quadratic equation. A quadratic equation can also be solved by several methods including factoring, graphing, using the square roots or the quadratic formula. Completing the square will always work when solving quadratic equations and is a good tool to have. Solving a quadratic equation by completing the square is used in a lot of word problems.I want you to follow the related link that explains the concept of completing the square clearly and gives some examples. that video is from brightstorm.
How are the real solutions of a quadratic equation related to the graph of the quadratic function?
The real solutions are the points at which the graph of the function crosses the x-axis. If the graph never crosses the x-axis, then the solutions are imaginary.
