Missing Value Using the SLOPE Formula

Front

What is the formula for calculating the slope between two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

Tags

CCSS.8.EE.B.5

Front

If the slope between two points is positive, what does that indicate about the line connecting them?

Back

The line rises from left to right.

Tags

CCSS.8.EE.B.5

Front

What does a slope of zero indicate about a line?

Back

The line is horizontal.

Tags

CCSS.8.EE.B.5

Front

What does an undefined slope indicate about a line?

Back

The line is vertical.

Tags

CCSS.8.EE.B.5

Front

Given the points (2, 3) and (5, 7), what is the slope?

Back

Slope = (7 - 3) / (5 - 2) = 4/3.

Tags

CCSS.8.EE.B.5

Front

If the slope between points (x1, y1) and (x2, y2) is -1, what can be said about the relationship between y2 and y1?

Back

y2 is 1 unit less than y1 for every 1 unit increase in x.

Tags

CCSS.8.EE.B.5

Front

How do you find a missing y-coordinate if you know the slope and one point?

Back

Use the slope formula: y = y1 + m(x - x1), where m is the slope.

Tags

CCSS.8.EE.B.5

Front

How do you find a missing x-coordinate if you know the slope and one point?

Back

Rearrange the slope formula to solve for x: x = x1 + (y - y1) / m.

Tags

CCSS.8.EE.B.5

Front

What is the slope of the line that passes through the points (1, 2) and (1, 5)?

Back

The slope is undefined because the x-coordinates are the same.

Tags

CCSS.8.EE.B.5

Front

If the slope of a line is 3, what does this mean in terms of rise over run?

Back

For every 3 units the line rises, it runs 1 unit to the right.

Tags

CCSS.8.EE.B.5