An object is launched at 9.8 meters per second (m/s) from a 308.7-meter tall platform. the function that represents the object's height s at time t seconds after launch is
s(t) = −4.9t2 + 9.8t + 308.7,
where s is in meters. when does the object strike the ground?

1. 8 or -82. 14 or -143. -11, -3, 0, 7, 10

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!