It is an equation and the value of n is 9
Using the discriminant for a quadratic equation the value of k works out as plus or minus 12.
Using the quadratic equation formula the value of x is -8 or 5
An equation where x equals 3.
You can tell if an equation is a function if for any x value that you put into the function, you get only one y value. The equation you asked about is the equation of a line. It is a function.
Without prior knowledge of the value of q or r, it is impossible to calculate the answer to this equation.
This is a simultaneous equation question: x-2y = -4 2x-y = 1 Multiply all terms in the top equation by 2: 2x-4y = -8 2x-y = 1 Subtract the bottom equation from the top equation remembering that a minus minus equals a plus: -3y = -9 Divide both sides of the equation by -3 to find the value of y remembering that a minus divided by a minus equals a plus: y = 3 Substitute the value of y into the original equations to find the value of x: Solution: x = 2 and y = 3
Yes that is correct
By including its plus or minus signs
15x minus 8=minus 180 3x+8=24