What is an equation of the line (-1,3),(2,-.5)? Please get back to me soon math geniuses!
Using (x1, y1) = (-1, 3) and (x2, y2) = (2, -.5), find the slope of the line:
slope = m = (y2 - y1) / (x2 - x1)
Then use the slope-intercept form of a line to get the equation: y - y1 = m(x - x1)
Replace x1, y1, and m in the equation; simplify what you get so you have an equation with y alone on one side and an x-term and another number on the other side.
$${\frac{\left({\mathtt{y2}}{\mathtt{\,-\,}}{\mathtt{y1}}\right)}{\left({\mathtt{x2}}{\mathtt{\,-\,}}{\mathtt{x1}}\right)}}$$this is slope formula.y2 is -.5. y1 is 3. x2 is 2. x1 is-1.
-.5-3=-3.5
2-(-1)=3
slope is 3.5/3 y=3.5/3x+b 3=3.5/3(-1)+b
3=~-1.1666666666666667+b
~4.1666666666666667=b
y=3.5/3+4.1666666666666667