Review Unit 3

Write the equation of a line PARALLEL to y = 2x + 3 that passes through the point (3, 1).

y - y1 = m (x - x1)

Two lines that are parallel will have ...

• Slope that is opposite reciprocals

• No slope

• Slope that is the same

• none of the above

Two lines that are perpendicular lines have ...

• Slope that is opposite reciprocals

• No Slope

• Slope that is the same

• none of the above

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

What slope is perpendicular to:  
m = 5/8

• -5/8
• 5/8
• -8/5
• 8/5

A line is parallel to   y = 2x - 7.
What is it's slope?

• -2
• 1/2
• -1/2
• 2

• 1

• -1