Answer:
1) coordinates
2) slope
Step-by-step explanation:
The equation of a line is given by the two equations:
, where m is the slope and b is the y-intercept, <em>or</em>
<em />, where x₁<em> </em>and y₁<em> </em>is the location of any point on the line, and m is the slope.
→ As such, we know that given the slope and the coordinates of any point on a line, we can write the line's equation.
We can also find the slope of a straight line between two points with the following equation:
, where m is the slope, x1 and y1 is the location of the first point, and x2 and y2 is the location of the second point. Remember: <em>rise (y)</em> over <em>run (x)</em>.
→ So, given only two points, it is easy to find the equation of the line when you first find the slope.