Int1 Semester 2 Final Review

Linear Systems

100

This is what happens when two lines never intersect.

What is "No solution"?

200

Solve the system:

x + y = -5
y = -3

What is (-2, -3)?

OR

What is x=-2, y=-3?

300

Solve the system:

2x + y = 2
y = 3x - 3

What is (1, 0)?

OR

What is x=1, y=0?

400

Solve the system:

3x - 2y = 11
x - 3y = -1

What is (5, 2)?

OR

What is x=5, y=2?

500

Solve the system:

x - y = 4
-3x + 3y = -12

What is "Infinitely many solutions"?

Exponential Functions

100

This is the value of:

2*3²

What is 18?

200

This is the value of:

4*2^-2

What is 1?

300

If the equation

P = 550*(1.12)^t

describes the population P of endangered tigers in the wild after some time t, the 550 represents this.

What is the starting population of tigers?

400

In the graph, this is the half-life of the material.

What is 8 days?

500

If you invest $5,000 into a bank account with 4% interest compounded quarterly, and never made a deposit or withdraw, this is how much you would have after 10 years.

What is $7,444.32?

Two-Variable Data

100

This is the concept that is not understood by that relative who tells you over Thanksgiving dinner, "There's a link between spending more time on YouTube and failing grades, so get off YouTube!"

What is "Correlation does not imply causation"?

200

This is the term for a correlation in which as the independent variable increases, the dependent variable also increases.

For example, spending more time studying correlates with higher test scores.

What is a positive correlation?

300

The equation of this best-fit line is approximately this.

What is (approximately) y = 30x + 100?

400

In the scenario shown below, this is how many emails you might expect an 80-year-old person to send per day.

What is 0 emails?

500

The residual graph below shows that the best-fit line is this.

What is a bad fit?

OR

What is a curve?

Inequalities

100

The number line shows this inequality.

What is x<-1?

200

This is the solution to this inequality:

-2x + 1 > 9

What is x<-4?

300

The inequality below is described by this equation.

What is y≤1.5x+3?

400

This area (blue, purple, or red) is the solution set to both of these inequalities.

What is purple?

500

This is the solution to the system of inequalities below.

What is no solution?

Mixed Bag!

100

This linear system has this many solutions:

3x - y = 5
-3x + y = -5

What is infinitely many?

200

The residual graph below shows this information about the best fit line.

 

What is that it's a good fit?

300

If a radioactive isotope has a half-life of 30 years, and there were 4,500 grams when you found it, this much would remain after 50 years.

What is 1,417 grams?

400

This is the solution to the linear system graphed below.

What is (5, -2)?

OR

What is x=5, y=-2?

500

If the equation

P = 550*(1.12)^t

represents the population P of endangered tigers in the wild after some time t, the 1.12 represents this.

What is the multiplier?

OR

What is the growth factor?