```Question 147173
The first one is the easiest, so I'll start there.  Heck, it's the beginning anyway.  The equation of the line should be in y=mx+b form, with b being your y intercept (whatever y is when x is zero, like y intercepted the ball before x could score) and m is your slope.  to get the slope, take the coordinates of two points on the line.  Then set it up like this {{{(y1-y2)/(x1-x2)}}}.  That doesn't mean double y and x, that just means the two different points for y and x that you have.  So don't multiply.  Plug in the corressponding values (it doesn't matter which order as long as you are consistent).  It should look like {{{(2-3)/(0-4)}}}.  Simplify it and get {{{-1/-4}}} or 1/4.  That is your slope.  You are given that your y intercept is 2, because when x is zero, y is 2.  So that is your intercept.  plug this into y=mx+b and get {{{y=1/(4x) +2}}}.  That is your equation for the line.  repeat these steps for the other lines.--------(When the intercept is not given to you, just use the slope.  The slope is rise over run, so the numerator is how much y should increase or decrease, and the denominator is how much x should increase or decrease.  Play around with it until x is zero and see what y is.  If x is not zero from that, graph the line with the points you know and estimate what y is when x is zero.)```