9x - 7y =4
-7y = -9x + 4
y = 9x/7 - 4/7
Slope of line parallel: 9/7
Slope of line perpendicular: -7/9
Consider the line 9x - 7y =4
What is the slope of a line parallel to this line?
What is the slope of a line perpendicular to this line?
1 answer