12. ACT/SAT Quadrilateral ABCD has vertices A(0,1), B(1,4), C(5,5), and D(4,2). Kalina uses the slope
formula to show that BC is parallel to AD. Which
of the following can she use as her next step to
show that ABCD is a parallelogram?
1. Use the Slope Formula to show
that AB is parallel to CD.
II. Use the Distance Formula to
show that BC is congruent to AD.
III. Use the Distance Formula to
show that AB is congruent to CD.

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.