Graphing Lines

Question 1

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

Answer 1

X is Horizontal

Y is vertical

Question 2

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

Answer 2

Equation: y = 1/2x

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

Then plot the points

Question 3

How to find a slope

Answer 3

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

Question 4

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?

Answer 4

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

1st Quadrant is Upper Right Hand Quarter

4th Lower Right hand Corner

Question 5

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

Answer 5

Y = 6

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

Question 6

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

Answer 6

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

Question 7

What is the slope of the line x = -3

Answer 7

Undefined

Question 8

A Vertical or Horizontal line has an undefined slope.

Exp. Which slope is undefined

X = -3

Y = 4

Answer 8

X is undefined

A Vertical line has an undefined slope

Question 9

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

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

Answer 9

Vertical, X does change x = -5

Horizontal, Y doesn’t change y = -2

Question 10

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

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

Answer 10

Both 0