Co-Ord Geo JC

Co-Ordinate Geometry Recap

Distance between 2 points

Find the distance between the following points:

A(3, 12) & B(6, 8)​

Some text here about the topic of discussion

Multiple Choice

Which axis runs horizontally?

• x
• y

Multiple Choice

Which axis runs vertically?

• x
• Y

Multiple Choice

In the ordered pair (7, 8), which number is the x-coordinate?

• 7
• 8
• neither
• both

Multiple Choice

In the ordered pair (4,9), which number is the y-coordinate?

• 4
• 9
• neither
• both

Multiple Choice

What's the distance between (0,0) and (3,4)?

• 7
• 49
• 5
• 25

Multiple Choice

Find the distance between (-9, -1) and (-2, -6).Round to the nearest tenth.

• 8.6

• 12.1

• 9.9

• 13.0

Multiple Choice

Find the midpoint of the line segment with the given endpoints.

• (-4,3)

• (0.5,0.5)

• (-0.5,0.5)

• (5,4)

Describing the Graph

• Where it crosses the y-axis is the y-intercept.

• Where it crosses the x-axis is the x-intercept.

• How STEEP it is is called the SLOPE.

y-intercept

• Can be stated TWO WAYS

• ONE: just the number where is crosses the y-axis. In this case -2.

• TWO: the coordinates of where it crosses. In this case (0,-2).

x-intercept

• Can be stated TWO WAYS

• ONE: just the number where is crosses the x-axis. In this case 4.

• TWO: the coordinates of where it crosses. In this case (4,0).

Multiple Choice

What is the y-intercept of the line shown?

• (0,-4)

• (-4,0)

• (0,1)

• (1,0)

Multiple Choice

What is the x-intercept of the line shown?

• (0,-4)

• (-4,0)

• (0,1)

• (1,0)

Open Ended

What do these two lines have in common?

POSITIVE SLOPE

UP from left to right

NEGATIVE SLOPE

DOWN from left to right

SLOPE OF ZERO

HORIZONTAL line

UNDEFINED SLOPE

VERTICAL line

Multiple Select

Which graphs have a POSITIVE slope?

Multiple Select

Which graphs have a NEGATIVE slope?

Multiple Select

Which graphs have an UNDEFINED slope?

Multiple Select

Which graph has a slope of ZERO?

Multiple Choice

The slopes of parallel lines are...

• the same

• opposite

• always different

Multiple Choice

Slopes of perpendicular lines are...

• opposite reciprocals

• opposites

• identical

• nothing

Multiple Choice

y = ^{- 2}/₃x + 2 y = ³/₂x + 9 These lines are...

• Parallel

• Perpendicular

• Neither

Multiple Choice

Write the equation in point-slope form

of the line that passes through the point

(4, -7) and has a slope of -1/4.

• y + 7 = -1/4(x - 4)

• y - 4 = -1/4(x + 7)

• y + 7 = 4(x - 4)

• y - 7 = -1/4(x - 4)

Multiple Choice

Name the equation that is represented by the graph.

• y=2x+4

• y=-2x+4

• y=2x-4

• y=-2x-4