To graph the function y = 2x^2 + 2x - 40 on a graphing calculator, enter the equation into the calculator as y1 = 2x^2 + 2x - 40. Once you have entered the equation, graph it to see the parabolic curve.
The zeros of the function are the x-values at which the function intersects the x-axis, meaning y = 0. To find the zeros, set y = 0 in the equation 2x^2 + 2x - 40 = 0 and solve for x. You can also use the graphing calculator to find the zeros by using the "zero" or "root" function.
The zeros of the quadratic function y = 2x^2 + 2x - 40 are 4 and -5.
Use the graphing calculator to graph the quadratic function y = 2x2 + 2x – 40. What are the zeros of the function?
4 and –5
–4 and 5
–5 and –40
4 and –40
1 answer