How to find the slope and y-intercept of y=-x-13?

What are the solutions to the equation 4x2+3x=24-x

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.