EXPRESSIONS, EQUATIONS, AND FUNCTIONS
Find the value of 4(6n+7) when n=6
172.
11 subtract the square root of x where x=64
What is 3.
Identify the slope and y-intercept: 6x+3y=18
What is m=-2;b=6
Equation of the line that passes through the point (-2,9) and has slope -2.
What is y=2x+5
Solve the linear system: 5x+y=4, 6x-y=7
What is x=1, y=-1 or (1,-1)
Write "3 times the difference of a number m and 15 is equal to 30" as an expression
What is 3(m-15)=30.
Simplify: -7x(x-13)
What is 7x2+91x.
Find the X-intercept and Y-intercept of -2x+5y=-20
x-intercept=10; y-intercept=-4
Write the equation of the line that passes through the two given points: (3,9) (1,1).
-4x+y=-3 or y = 4x -3
Is x=8 a solution for 2x+10<4x-7
What is no 26<25 does not work!
-16-(-25.2).
What is 9.2.
Solve for x: 16x-4=4(2x-3)
What is x=-1.
Write the equation of the line that passes through the given point and is perpendicular to the given line: (3,-3), y=x+5
y=-x.
Is the ordered pair a linear system? (8,5), 5x-4y=20, 3y=2x+1
No.
You buy apples at $2 per pound and oranges at $3.50 per pound. What is the total cost of 7 pounds of apples and 4 pounds of oranges?
28
An elevator moves at a rate of -5.8 feet per second from a height of 500 feet above ground. It takes 6 seconds for the elevator to make its first stop. How many feet above the ground is the elevator now?
465.2 feet.
Solve proportion: b/8=9/4
b=18.
Solve: abs(x-2)+6>9
x>5 or x<-1.
Give the coordinates of a point that lies on the graph of: x<3, y>1, y>-x (greater than or equal to)
Many answers, e.g. (0,2)
A rectangular banner is 16 feet long and has an area of 80 square feet. What is the perimeter of the banner?
42 feet.
True or False: PI is a real number
True.
Is the point (-1, -9) on the graph of y=-x2+x-7
Yes
Is the origin (0,0) on the graph: y>4x-3
Yes
Solve the linear system: 2x+9y=16, 5x=1-3y
x=-1;y=2 or (-1,2)