Straight Line Graphs

Question 1

What is the origin?

Answer 1

The origin is the point (0, 0).

Question 2

How are coordinates written?

Answer 2

(x, y)

Question 3

How do you know if a graph will be a straight line?

Answer 3

If the equation can be rearranged into y = ax + b then it is a straight line graph.

Question 4

What forms do vertical and horizontal lines take?

Answer 4

Vertical lines take the form x = k and horizontal lines take the form y = c.

Question 5

On a graph of form ax + b, what is the gradient?

Answer 5

a

Question 6

What is a gradient?

Answer 6

Δy/Δx

Question 7

What defines parallel lines?

Answer 7

Lines that have the same gradient.