EXPRESSIONS, EQUATIONS, AND FUNCTIONS
REAL NUMBERS
LINEAR EQUATIONS/GRAPHING
WRITING, SOLVING AND GRAPHING LINEAR EQUATIONS
SYSTEMS OF EQUATIONS
100
4(6n+7) when n=6
What is 172.
100
11-square root of x where x=64
What is 3.
100
Identify the slope and y-intercept:
6x+3y=18
What is m=-2;b=6
100
What is the slope and y intercept?
y=2x + 5
What is m=2, b=5
100
Solve the linear system by substitution or graphing 5x+y=4, y= 7x - 7
What is x=1, y=-1 or (1,-1)
200
3 times the difference of a number m and 15 is equal to 30 (as an expression)
What is 3(m-15)=30.
200
Simplify:
-7x(x-13)
What is 7x^2+91x.
200
X-intercept and Y-intercept:
-2x+5y=-20
What is x-intercept=10; y-intercept=-4
200
What is the slope? (3,9) (1,1).
What is m=4
200
graph y= -x + 5 and y= -x + 8
What is no solution
300
x=8 a solution for 2x+10<4x-7
What is no 26<25 does not work!
300
-16-(-25.2).
What is 9.2.
300
Solve for x:
16x-4=4(2x-3)
What is x=-1.
300
Put into slope intercept form
(0, 4) m=3
y= mx + b
What is y=3x + 4
300
Is y= 2x2 + 7 a linear system?
What is No, it is a quadratic
400
You buy apples at $2 per pound and oranges at $3.50 per pound. What is an expression for the total cost of fruit purchased? Also, what is the total cost of 7 apples and 4 oranges?
What is 2x+3.50y=c ; 28
400
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 about the ground is the elevator now?
What is 465.2 feet.
400
Solve proportion:
b/8=9/4
What is b=18.
400
Solve: (x-2)6>12
x > 4
400
y= 2
3x + y = 23
what is (7,2)
500
A rectangular banner is 16 feet long and has an area of 80 square feet. What is the perimeter of the banner?
What is 42 feet.
500
True or False: If a number is positive, then its opposite is negative.
What is True.
500
Graph:
y=-x+7
What is look at graph.
500
Graph: y=4x-3
What is look at graph.
500
what is the solution?
what is (1, 3)