# Graphing Lines Flashcards

1
Q

Which is the X asis and which is the Y axis?

A

X is Horizontal

Y is vertical

2
Q

How to make a line graph when there is a known equation?

A

Equation: y = 1/2x

```                      X | Y
---------------
2  | 1
4   | 2
|```

Then plot the points

3
Q

How to find a slope

A

Slope = Rise (Up & Down) ÷ Run (Right & Left)

4
Q

What are the values inside the 4 quadrants?

Where does the first quadrant start and where is the 4th quadran

Which direction do they run?

A

1st: both positive
2nd: X (-), Y (+)
3rd: both negative
4th: X(+), Y (-)

1st Quadrant is Upper Right Hand Quarter

4th Lower Right hand Corner

5
Q

What is the equation of a horizontal line through (-4, 6)

A

Y = 6

Because it will be a straight line cross the “6” point on the graph

6
Q

What is the slope of the line: y = -4

A

0

In the question “y” is a constant
So plugging it into the formula for Slope will produce a 0 as the “y” variable.

Hence, no change

7
Q

What is the slope of the line x = -3

A

Undefined

8
Q

A Vertical or Horizontal line has an undefined slope.

Exp. Which slope is undefined

X = -3

Y = 4

A

X is undefined

A Vertical line has an undefined slope

9
Q

What is the equation of the vertical line through ( -5, -2)

What is the equation of a horizontal line through (-5, -2)

A

Vertical, X does change x = -5

Horizontal, Y doesn’t change y = -2

10
Q

The “x” intercept happens when “y” is equal to

The “y” intercept happens when “x” is equal to

A

Both 0