Classify Slope

The slope of side AB is -3 and the slope of DC is -3. What does this mean?

• Side AB and AD are parallel

• Side AB and AD form a right angle

• Side AB and AD are congruent

• Nothing Specific

XWYZ looks like it is a square, but what two slopes here prove it has right angles?

• 0 and undefined

• -1 and 1

• -1/2 and 1/2

Brad proved that ABCD is a parallelogram and that all sides had the same distance What should he do next if he wants to prove it is a square?

• He doesn't need to do anything else, it looks like a square so he is all set. 

• Compare the slopes of adjacent sides to see if they are perpendicular. 

Josie found the slope of AB to be. Use rise over run to check her answer.

• She was correct. 

Julia proved ETNU is a parallelogram. She notices that side ET has a slope of 1/2 and EN has a slope of -2. What can she classify ETNU as?

• A rectangle

• A square

• A rhombus

• Just a parallelogram

Sarah proved that this is a square. The slopes of -2/5 and 5/2 made her able to do this. How come?

• Because those slopes form parallel lines.

• Because those slopes form perpendicular lines, creating right angles.

• Because those slopes make the sides congruent.

Julia proved ABCD is a parallelogram. She notices that side AB has a slope of 8/3 and BC has a slope of 1/3. What can she classify ABCD as?

• A rectangle

• A square

• A rhombus

• Just a parallelogram

Choose the correct answer.

Write the equation of the line in slope intercept form that has a slope of -2 and a y-intercept of 9

• y = -2x + 9

• y = 2x - 9

• y = 9x - 2

• y = -9x + 2

Write the equation of the line that has a slope of 3 and passes through the point (-4, -14).

• y = -3x +10

• y = -3x - 4

• y = 3x - 14

• y = 3x - 2