please help work due in 5 min

Question

Which of the following describes the graphs y = 3x and y = −3x correctly?

A. These graphs are similar because they have the same y-intercept.

 

B. These graphs are similar because they both have positive slopes.

 

 

C. These graphs are similar because they both have negative slopes.

 

D. None of the above.

Answer 1

E. Consider managing your time better so you're not asking questions five minutes before it's due. =)

Answer 2

 Both lines are in the form y = mx + b, although there is no b (y-intercept). Remember, m = slope. Since one line has a slope of 3 and the other a slope of -3, then we can automatically eliminate choices B and C. The y-intercept of both is actually 0 because y = mx + 0 = y = mx. Graphically speaking, both of these lines cross the y-axis at x = 0, which is the origin (0, 0). The correct choice is A.