EXPRESSIONS, EQUATIONS, AND FUNCTIONS
Exponential Growth or Decay?
LINEAR EQUATIONS/GRAPHING
WRITING, SOLVING AND GRAPHING LINEAR EQUATIONS
SYSTEMS OF EQUATIONS
100
4(6n+7) when n=6
What is 172.
100

y=3(2)x   Is this exponential growth or decay? explain why.

Growth because the base 2 is greater than 1 

100
Identify the slope and y-intercept: 6x+3y=18
What is m=-2;b=6
100
Equation of the line that passes through the point (-2,9) and has slope -2.
What is y=2x+5
100
Solve the linear system: 5x+y=4, 6x-y=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

y=8(0.4)x   Is this exponential growth or decay? explain why.

Decay because the base 0.4 is less than 1 

200
X-intercept and Y-intercept: -2x+5y=-20
What is x-intercept=10; y-intercept=-4
200

Write an Equation in standard form of the line that passes through the two given points: (3,9) (1,1).

What is -4x+y=-3.

200

Graph: y >-2x + 2 and y< 0.5x - 1. Pick any (x,y) point that is a solution. 

What is look at graph. Solution is anywhere the shading meets. 

300

Is x=8 a solution for 2x+10<4x-7

What is no 26<25 does not work!

300

Write the exponential equation with a base of 4 and y-intercept of 0.5. State whether it is a exponential growth or decay. 

0.5(4)x  This is an exponential growth. 

300
Solve for x: 16x-4=4(2x-3)
What is x=-1.
300

Write an equation of a line that is perpendicular to the given line:  y=x+5

What is y=-x + or - any number. The slope just needs to be -1. 

300
Is the ordered pair a linear system? (8,5), 5x-4y=20, 3y=2x+1
What is No.
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

Write an exponential equation whose base is 0.3 and y-intercept is 5. State whether it is an exponential growth or decay 

y=5(0.3)^x This is an exponential decay 

400
Solve proportion: b/8=9/4
What is b=18.
400

Solve: -2(x+6)>8

What is x<-10

400

Solve: 2x - 3y = 9

          4x + 8y = 16

What is (6,1).

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

In the exponential equation y = a(1+r)x, what does r represent? 

A percent as a decimal. 

500
Graph: y=-x+7
What is look at graph.
500
Graph: y>4x-3
What is look at graph.
500
Solve the linear system: 2x+9y=16, 5x=1-3y
What is x=-1;y=2 or (-1,2)
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