Find y if the point (-6,y) is on the line that passes through (-1,7) and (3,2).
The slope is
[ 2 - 7 ] / [ 3 - -1 ] = -5 /4
Using the second point and the slope to write the equation of the line
y= -(5/4) (x -3) + 2
When x = -6
y = (-5/4) ( -6 - 3) + 2
y = (-5/4)(-9) + 2
y = 45/4 + 8/4
y = 53 / 4
