The graph of which of the following will be perpendicular to the graph of y = 2x – 4?
a.
2x + y = 4
b.
4x – 2y = 4
c.
y = –2x + 8
d.
2x + 4y = 1

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?