Finding the Slope of a Line for ACT Success

This video tutorial introduces the concept of slope, explaining how to determine the slope of a line using a graph and the point-slope formula. It covers the characteristics of parallel and perpendicular lines, including their slopes. The lesson includes examples and practice problems to reinforce understanding, preparing students to tackle slope-related questions confidently.

What does a positive slope indicate about the direction of a line?

• The line moves downwards from left to right.

• The line is vertical.

• The line moves upwards from left to right.

• The line is horizontal.

Tags

CCSS.8.EE.B.5

How can you determine the slope of a line from a graph?

• By counting the number of points on the line.

• By creating a right triangle and using the rise over run formula.

• By finding the midpoint of the line.

• By measuring the length of the line.

Tags

CCSS.8.EE.B.5

If a line slopes downwards from left to right, what can be said about its slope?

• The slope is zero.

• The slope is positive.

• The slope is undefined.

• The slope is negative.

Tags

CCSS.8.EE.B.5

In the formula slope = rise over run, what does 'rise' represent?

• The total length of the line.

• The vertical distance between two points.

• The angle of the line.

• The horizontal distance between two points.

Tags

CCSS.8.EE.B.5

What is the slope of a line that passes through the points (-1/2, 2) and (-1/4, 1/4)?

• Negative 10

• Negative 5/2

• Negative 7

• Negative 28

Tags

CCSS.8.EE.B.5

What is the point-slope formula used to find the slope of a line?

• slope = y2 + y1 / x2 + x1

• slope = y2 - y1 / x2 - x1

• slope = y2 * y1 / x2 * x1

• slope = y2 / y1 - x2 / x1

Tags

CCSS.8.EE.B.5

What is true about the slopes of parallel lines?

• They are always zero.

• They are always undefined.

• They are opposite reciprocals.

• They are the same.

Tags

CCSS.8.EE.B.6

What is the opposite reciprocal of the slope 3/4?

• Negative 3/4

• 4/3

• 3/4

• Negative 4/3

Tags

CCSS.8.EE.B.5

If two lines are perpendicular, what is true about their slopes?

• They are both undefined.

• They are opposite reciprocals.

• They are both zero.

• They are the same.

Tags

CCSS.8.EE.B.6

What must the product of the slopes of two perpendicular lines equal?

• One

• Negative 2

• Negative 1

• Zero

Tags

CCSS.8.EE.B.6