For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. X Y
52 39
32 24
20 15
8 6

Find the slope of the given lines:
2. (6, 5) & (9, 10)
3. (-2, -4) & (-2, -6)
Write the equation of the line in point slope form:
4. (5, -9); m = 6
Write the equation of the line in slope-intercept form:
5. (4, 7); m = (- 3/8)
6. (-5, -5) & (-1, 3)
Write the equation of the line in standard form:
7. (-3, 6); m = (1/2)
8. (1, 0) & (-5, 3)
9. Write the equation of the line perpendicular to 4x – 5y = -10 through the point
(2, 3). Write the equation in slope-intercept form. (2 pts.)
What is the slope of the perpendicular line:
What is the equation: ­­­­­­­­­­­­­­­­­­­­

1. a driveway has a 15° grade. if the driveway is 40 meters long, how much does the driveway rise? (nearest tenth of a meter) 2. a person located 4 miles from a rocket launch site sees a rocket at an angle of elevation of 32°. at that moment, how high is the rocket above the ground? (nearest tenth of a mile) 3.an airplane approaches an airport landing strip with an angle of depression of 12°. if the airplane is flying at an altitude of 20,000 feet, find the distance on the ground that the plane will need to land. (nearest 1,000 feet) 4.two buildings are located on opposite sides of the street, 40 meters apart. the angle of elevation from the top of the shorter building to the top of the taller building is 53°. if the taller building is 300 meters tall, what is the height of the shorter building? (nearest meter) 5.george is 187 cm tall. his son, ralph, is 142 cm tall. who casts the longer shadow. george when the sun is 65° above the horizon, or ralph when the sun is 56° above the horizon? how much longer? (nearest centimeter)

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)