GRE Exam Numerical Ability Co-ordinate geometry

12. Write an equation of the line that passes through the pair of points.

(-5, -2), (3, -1)

Read Solution (Total 1)

the equation of the line is:
( y - y1) = ((y2 - y1)/(x2 - x1)) * (x - x1)
=> (y + 2) = (( -1 + 2)/(3 + 5)) * (x + 5)
=< (y + 2) = (x + 5)/8.
9 years agoHelpfull: Yes(1) No(1)

GRE Other Question

Pat invested a total of $3,000. Part of the money was invested in a money market account that paid 10 percent simple annual interest, and the remainder of the money was invested in a fund that paid 8 percent simple annual interest. If the interest earned at the end of the first year from these investments was $256, how much did Pat invest at 10 percent and how much at 8 percent? 14. A 1,500-gallon tank contains 200 gallons of water. Water begins to run into the tank at the rate of 75 gallons per hour. When will the tank be full but not overflowing?
a. 7 hours, 8 minutes
b. 17 hours, 20 minutes
c. 20 hours
d. 22 hours, 40 minutes