# Graphing Lines Flashcards

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

X is Horizontal

Y is vertical

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

Equation: y = 1/2x

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

Then plot the points

How to find a slope

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

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?

1st: both positive

2nd: X (-), Y (+)

3rd: both negative

4th: X(+), Y (-)

1st Quadrant is Upper Right Hand Quarter

4th Lower Right hand Corner

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

Y = 6

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

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

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

What is the slope of the line x = -3

Undefined

A Vertical or Horizontal line has an undefined slope.

Exp. Which slope is undefined

X = -3

Y = 4

X is undefined

A Vertical line has an undefined slope

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

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

Vertical, X does change x = -5

Horizontal, Y doesn’t change y = -2

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

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

Both 0