Which of the following lines is perpendicular to y = − 2x + 3 and has the same y-intercept as y = 2x − 4?  Choices:
A) y = -1/2*x + 3
B) y = 1/2*x - 4
C) y = 1/2*x + 3
D) y = 2x + 3
E) y = 2x − 3
Since our line has to perpendicular to y = − 2x + 3   Slope of this line , m = -2   Slope will be required line L = 1/2 ( Product of slope of perpendicular lines = -1)   y-intercept of line L is same as y intercept of line y = 2x − 4   y - intercept of line L = -4   Required line = 1/2* x - 4   Answer y = 1/2*x - 4
<result>B</result>
Which of the following lines is perpendicular to y = − 2x + 3 and has the same y-intercept as y = 2x − 4?