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What are the possible values of k when the equation x squared plus 2kx plus 81 equals 0 has equal roots?
Wiki User
∙ 7y ago
Using the discriminant the possible values of k are -9 or 9
Wiki User
∙ 7y ago
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Could you find the possible value or values of y in the quadratic equation 4-4y-y2 equals 0?
-0.82 , -4.82
X2 - 6x equals -8?
This is a quadratic equation question in finding the possible values of x x2 - 6x = - 8 x2 - 6x + 8 = 0 Factorise the expression in the equation: (x-2)(x-4) = 0 Therefore: x = 2 or x = 4
What does solve the equation mean?
Find values for the variable that satisfy the equation, that is if you replace those values for the variable into the original equation, the equation becomes a true statement.
How do you graph y equals 4x squared?
Select a few values for "x"; calculate the corresponding "y" values; plot the points on the graphing paper; join the points with lines. In fact, that's the method used to draw just about any graph.
Find the value or values of x in the quadratic equation x2 equals 6x-9?
In the equation x2 = 6x - 9, all terms must be moved to one side of the equals sign, giving x2 - 6x + 9 = 0. This becomes factorable to (x -3)(x-3).
What are the possible values of k in the quadratic equation x squared plus 5kx plus 2k equals 0 which has equal real roots?
Using the discriminant formula for a quadratic equation k has a value of 8/25 or maybe 0.
What is an equation that performs mathematical calculations on number values?
A squared plus b squared equils c squared
These values are also called because they are the values at which the equation equals zero?
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)
Where are the points of intersection of the straight line 3x -y equals 5 with the curve 2x squared plus y squared equals 129?
(52/11, 101/11) and (-2, -11) Rearrange 3x-y = 5 into y = 3x-5 and substitute this into the curve equation and then use the quadratic equation formula to find the values of x which leads to finding the values of y by substituting the values of x into y = 3x-5.
Could you find the possible value or values of y in the quadratic equation 4-4y-y2 equals 0?
-0.82 , -4.82
Where do the curves of y equals 4x squared -2x -1 and y equals -2x squared plus 3x plus 5 intersect?
They intersect at points (-2/3, 19/9) and (3/2, 5) Solved by combining the two equations together to equal nought and then using the quadratic equation formula to find the values of x and substituting these values into the equations to find the values of y.
The regression equation is determined by minimizing?
The total squared error between the predicted y values and the actual y values
Does the equation define y as a function of x x equals y squared?
It depends on the domain of y. If that is restricted to non-negative values, then the answer is yes. But if y is allowed to be negative, then the answer is no because then there are two values of y for each non-zero value of x.
What are the values of x and y when x minus y equals 0 and x squared plus y squared equals 18?
(x, y) = (-3, -3) or (3, 3)
What are the coordinates of the straight line 2x plus y equals 1 with the curve of x squared -xy -y squared equals -11?
Answer: (-2, 5) and (5, -9) Merge the two equations together and form a quadratic equation in terms of x. Solving the quadratic equation gives x = -2 or x = 5 Substituting the above values into the linear equation will give the coodinates. So when x = -2 then y = 5 and when x = 5 then y = -9
Is a plus 2a equals 3a equation or expression?
It is, in fact, an identity - which is an equation which is true for all values of the variable.
How do you graph x squared plus y squared equals 15?
1st rearrange the equation so that it is in the form Y = . . . . .Then substitute in values for X (use whole numbers) and use the equation to calculate the value of Y (not Y squared).Then plot these numbers against each other (X and Y) on your graph.Remember that you also need to include negative values for X and when taking a square root the answer can be plus or minus (plot both), if you do enough examples you'll see a pattern forming
