7.3 The Discriminant Vocabulary D = b2 - 4ac
... 1. Factoring if the discriminant is a perfect square 2. Completing the Square if the equation has the form: x2 + (even number)x + constant = 0 3. Quadratic Formula always works, but may be more time consuming 4. Graphing if the discriminant is > 0. Will not work with imaginary roots ...
... 1. Factoring if the discriminant is a perfect square 2. Completing the Square if the equation has the form: x2 + (even number)x + constant = 0 3. Quadratic Formula always works, but may be more time consuming 4. Graphing if the discriminant is > 0. Will not work with imaginary roots ...
linear equations test review
... 26. In the left pan of a set of balance scales, there are 3 identical unknown masses and a mass of 5 g. The scales are balanced by placing a mass of 20 g in the right pan. Find each unknown mass. 27. Match each equation in column 1 to to its solution in Column 2. Column 1 Column 2 a) i) x = 4 b) ii ...
... 26. In the left pan of a set of balance scales, there are 3 identical unknown masses and a mass of 5 g. The scales are balanced by placing a mass of 20 g in the right pan. Find each unknown mass. 27. Match each equation in column 1 to to its solution in Column 2. Column 1 Column 2 a) i) x = 4 b) ii ...
Problems 1-3, solve and graph
... week. Her sister has $80 and plans to save $7 per week. In how many weeks will Jasmine have more money saved than her sister? Write and solve an inequality. Write your answer in a sentence. ...
... week. Her sister has $80 and plans to save $7 per week. In how many weeks will Jasmine have more money saved than her sister? Write and solve an inequality. Write your answer in a sentence. ...
Equation
In mathematics, an equation is an equality containing one or more variables. Solving the equation consists of determining which values of the variables make the equality true. In this situation, variables are also known as unknowns and the values which satisfy the equality are known as solutions. An equation differs from an identity in that an equation is not necessarily true for all possible values of the variable.There are many types of equations, and they are found in all areas of mathematics; the techniques used to examine them differ according to their type.Algebra studies two main families of equations: polynomial equations and, among them, linear equations. Polynomial equations have the form P(X) = 0, where P is a polynomial. Linear equations have the form a(x) + b = 0, where a is a linear function and b is a vector. To solve them, one uses algorithmic or geometric techniques, coming from linear algebra or mathematical analysis. Changing the domain of a function can change the problem considerably. Algebra also studies Diophantine equations where the coefficients and solutions are integers. The techniques used are different and come from number theory. These equations are difficult in general; one often searches just to find the existence or absence of a solution, and, if they exist, to count the number of solutions.Geometry uses equations to describe geometric figures. The objective is now different, as equations are used to describe geometric properties. In this context, there are two large families of equations, Cartesian equations and parametric equations.Differential equations are equations involving one or more functions and their derivatives. They are solved by finding an expression for the function that does not involve derivatives. Differential equations are used to model real-life processes in areas such as physics, chemistry, biology, and economics.The ""="" symbol was invented by Robert Recorde (1510–1558), who considered that nothing could be more equal than parallel straight lines with the same length.