Which pair of lines is perpendicular?

a. y=2x-1 and2y=-x+3

b. y=3x+4nand3y-x=5

c. y=-4x+2 and x+4y=6

d. y=-6x-3 and 6x-y=4

How many roots does a linear equation have?

A sports league has 10 teams. Each team must send at least one player to the league's annual meeting, but may send as many as 5 if space is available based on the cost of the meeting.

A rocket is launched from atop a 105-foot cliff with an initial velocity of 156 ft/s. The height of the rocket above the ground at time t is given by h = - 16t2 + 156t + 105.

At the concession stand medium soda cost $1.25 hot dogs cost $2.50. Natalie's group brought in pizza but is buying the drinks at the concession stand how many medium sodas can Natalie group buy with $20 make a table to show your work

Write an equation of the line that passes through (-4,-1) and is perpendicular to the line y=4/3x+6

A store has apples on sale for $5.00 for 2 pounds. If an apple is approximately 5 ounces, how many apples can you buy for $30.00? Complete the explanation. The cost per pound of the apples on sale is $. You can buy pounds of apples for $30.00.

What is the exact solutions of x2=5x+2

Which expression represents a negative number? a. 0.25 2.7 b.-0.25 2.7 c.-2.7 (-0.25) d.-0.25 (-2.7)

What is the factorization of the expression below? 4x2-9y2

4. Larry wants to save $87 for tickets to a concert. If he has $23 now and will save $4 per week, how long will it take him to get enough money to buy the tickets? Define the variable. Write and solve an equation to find the number of weeks.