Writing the equation of a straight line

Front

What is the formula to calculate the slope of a line using two points (x1, y1) and (x2, y2)?

Back

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

Tags

CCSS.8.EE.B.5

Front

Given the points (0, -1) and (2, 0), what is the slope of the line?

Back

Slope = 1/2

Tags

CCSS.8.EE.B.5

Front

What is the y-intercept of the line that passes through the point (0, -1)?

Back

y-intercept = -1

Front

Write the equation of a line in slope-intercept form with slope 4 and y-intercept 3.

Back

y = 4x + 3

Tags

CCSS.8.F.A.3

CCSS.8.EE.B.6

Front

What is the equation of a vertical line that passes through the point (3, 4)?

Back

x = 3

Front

How do you find the y-intercept from the slope-intercept form of a line?

Back

The y-intercept is the value of b in the equation y = mx + b.

Tags

CCSS.8.F.A.3

CCSS.8.EE.B.6

Front

What is the slope of a line that is horizontal?

Back

Slope = 0

Tags

CCSS.8.EE.B.5

Front

If a line has a slope of 2 and passes through the point (1, 1), what is the equation of the line?

Back

y = 2x - 1

Front

What does the slope of a line represent in a graph?

Back

The slope represents the rate of change of y with respect to x.

Tags

CCSS.8.EE.B.5

Front

What is the slope of a line that goes through the points (3, 4) and (3, -6)?

Back

Slope is undefined (vertical line).

Tags

CCSS.8.EE.B.5