![]() This process is fairly easy - just set x = 0, then solve your equation for f(x) or y, which gives you the y value at which your parabola passes through the y axis. X Research source Though it's often not necessary to find an equation's y intercept (the point at which the parabola passes through the y axis), you may eventually be required to, especially if you're in school. If necessary, find and plot the y intercept. Because finding the square root of a negative number is impossible, we know that no x intercepts exist for this particular parabola.Our previous standard form example, 2x 2 16x 39 gets plugged into the quadratic formula as follows:.The parabola's x intercepts are at approximately x = -1.318 and 1.518 -5x 2 1x 10 gets plugged into the quadratic formula as follows:.X Research source Note that this often gives you two answers for x, which is OK - this just means your parabola has two x intercepts. If it isn't already, get your equation into the form ax 2 bx c, then plug a, b, and c into the formula x = (-b /- SqRt(b 2 - 4ac))/2a. ![]() X Research source If you can't easily solve for your x intercepts or factor your equation, use a special equation called the quadratic formula designed for this very purpose.
0 Comments
Leave a Reply. |