1B - Percents & Graphing Quiz Review

​Review for Quiz Tomorrow: Percents and Graphing​

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You will want a white board​

These are the types of questions that will be on the quiz tomorrow!

Set up two fractions, with an = in between:

1. the percent divided by 100

2. "is" divided by "of"

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Then, cross multiply to solve for X.

If you don't know a number that should go in one of the spots, put an X there instead.

Percentages Questions

Multiple Choice

What is 7% of 27?

• 385.7

• 1.89

• 25.9

Multiple Choice

What percent of 124 is 97.4?

• 78.5%

• 127.3%

• 120.8%

Multiple Choice

370% of what is 97.4?

• 379.9

• 360.38

• 26.3

Take the x-values in the table, and substitute that number for x. Then solve for y. Your answer should be a number. ​

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Your final answers will be numbers in the y-column

Filling out an x-y table:

Multiple Choice

Finish filling out the Y-Values for the table:

y = -6x

Multiple Choice

Finish filling out the Y-Values for the table:

y = 2x-5

An Ordered Pair (x, y) tells you where to go from the origin (center of the graph). X values tell you to go left/right first, then the Y values tell you to go up/down. ​​

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Always label your points!

Graphing Points

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Multiple Choice

Based on the graph, what is the correct way to write these two points:

• A: (2, -3)

  B: (-4, 1)

• A: (-2, 3)

  B: (4, -1)

• A: (-3, 2)

  B: (1, -4)

Multiple Choice

Which of these points on the graph is (2, 1)

• A

• B

• C

• D

There are 4 kinds of slope: ​

1. Positive (up to the right)

2. Negative (down to the right)

3. 0 Slope (horizontal)

4. Undefined (vertical)​

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We always "read the slope" like you read a book - - from left to right!

​Slope

Multiple Choice

What kind of slope does this graph have?

• Positive

• Negative

• 0 Slope

• Undefined

Multiple Choice

What kind of slope does this graph have?

• Positive

• Negative

• 0 Slope

• Undefined

Multiple Choice

What kind of slope does this graph have?

• Positive

• Negative

• 0 Slope

• Undefined

Multiple Choice

What kind of slope does this graph have?

• Positive

• Negative

• 0 Slope

• Undefined

Two methods:

1. Count the squares up down, divided by the number of squares to move to the right

2. Use the Slope Formula (at the right)​

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When using Slope Formula - be careful with the negatives!

​Finding Slope

Multiple Choice

What is the slope of this graph? Simplify your answer!

• $$-\frac{2}{5}$$  

• $$\frac{2}{5}$$  

• $$-\frac{5}{2}$$  

• $$\frac{5}{2}$$  

Multiple Choice

What is the slope of this graph? Simplify your answer!

• $$-\frac{3}{2}$$  

• $$\frac{3}{2}$$  

• $$\frac{2}{3}$$  

• $$-\frac{2}{3}$$