Question 234418
You find any point on one of the paraboles and you find any point on the other parabola and you create a line using those two points.


If the points are (x1,y1) and (x2,y2), then the equation of the line would be:


y = mx + b where:


m is the slope = (y2-y1)/(x2-x1)


b is the y-intercept.


To find b, replace y with y1, and replace x with x1 to get:


y1 = m*x1 + b and solve for b.


This is after you found m, of course.


Example:


m = 5
y1 = 6
x1 = 3


To find b, you replace m with 5, y with 6, x with 3, to get:


y = mx + b becomes:


6 = 5*3 + b and you solve for b.


The line will intersect both parabolas because it was created from a point on both parabolas.