Final answer:
The equation y=x²+2x-8 is a quadratic equation in algebra, solved using methods like factoring, the quadratic formula, or completing the square, and can be graphed on a calculator.
Step-by-step explanation:
The question y=x²+2x-8 pertains to the subject of Mathematics, specifically in the area of algebra involving quadratic equations. Quadratic equations are polynomial equations of the second degree, typically expressed in the form ax²+bx+c = 0. To solve such equations, you can use methods such as factoring, completing the square, or applying the quadratic formula. For example, given the equation x² + 1.2 x 10⁻² x - 6.0 × 10⁻³ = 0, we can rearrange it and use the quadratic formula to find the two possible values for x. Similarly, to graph a line using a calculator, you can input the linear equation into the calculator's graphing function. In some cases, identifying that an equation is a perfect square can simplify the solution process, as with x² becoming a simpler equation after completing the square.