(-18,-14)(-6,15) find the slope of the line through each pair of points

How many zeros does the function f(x)=4x3-x2+1 have

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Which numbers have the same absolute value? choose all that apply. asap will mark at brainliest