Graphs

Question 1

What is the Vertical axis of a scatter plot called?

What is its function?

Answer 1

Y-axis

Dependent Variable

Question 2

What is the horizontal axis called on a scatter plot?

It’s function

Answer 2

X-axis

Independient variable

Question 3

Types of line (forms) of Scatterplots Define:

Linear Positive/ Negative

Quadratic

No Association

Answer 3

Linear Positive = Straight Line Upwards

Linear Negative = Straight Line Downwards

Quadratic = U shapped curve

No Association = Just dots all over No relationship

Question 4

Which are the 4 ways we describe a scatterplot

Answer 4

Form: Linear association or non linear

Direction: is the association positive or negative

Strength: Is the association Strong, Moderate, or Weak

Outliers: Are there outlayers

Question 5

Describe a Left Skewed Bar Graph.
Where are the Highest data & Lowest data

Describe a Right Skewed Bar Graph

Answer 5

Left Skewed

The Highest are on the Right and it gets progressively lower towards the Right.

Right Skewed:

Highest Data on the Left and its gets smaller towards the right

Question 6

Describe a symmetrical & Bimodal Bar Graph.

Which shapes do they look like

Or features do they have

Answer 6

Symmetrical look like a pyramid

Bimodal is symmetrical but has 2 peaks

Question 7

A positive covariance between 2 variables reveals that both variables tend to increase together

True or false

Answer 7

True

Question 8

A study found that the more telephones present in a house hold the higher incidence of cancer. It would be said the relationship between phones and cancer is

Positive covariance
Negative covariance
No cause and effect relationship

Answer 8

Positive covariance

Question 9

If the line on a scatterot goes in a downward direction it is said that it has a Positive Covariance

If the line on a scatterplot goes in an upward direction it is said to be a Negative Covariance

True or False

Answer 9

False

Question 10

What is the difference between inequalities and equations

Which sign does the inequality use.

Answer 10

Inequalities solve for a range of equalities

Equation solves for 1 number

X > 4 or Y < 1

Question 11

X- intercept: Define

Answer 11

Location on the coordinate plane where our graph crosses the x - axis

Question 12

Y-intercept: Define

Answer 12

Location on the coordinate plane where our graph crosses the y - axis

Question 13

2x + 5y = -20

Find the “x” axis

Answer 13

To find “x” axis “y” equals 0

2x + 0 = -20

-20 ÷ 2= -10

Question 14

2x + 5y = -20

Find the “y” intercept

Answer 14

To find “y” intercept; “x” intercept is equal to 0.

2 (0) + 5y = - 20

5y = -20

-4

Question 15

How to know when a graphing line passes through the origin

Answer 15

The result will be “0”

Exp. ax + by = 0

Question 16

How to solve

4x - 3y =0

Answer 16

4x -3y = 0

4x - 3y = 0
+ 3y = 0 + 3y

4x = 3y

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Then plug in any number into the “x” variable.

4×3 = 3y
12 = 3y
4

X = 3 & Y = 4

Question 17

How to write an equation in slope intercept form when the slope and intercept are given.

m = 5/3
y - intercept: (0,4)

Answer 17

Y = mx + b

Y = 5/3 x + 4

Question 18

Formula for writing a Formula in slope intercept

Answer 18

Y = mx + b