Wk 19: Writing Linear Equations from Graphs

Front

What is the slope in the equation y=mx+b?

Back

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

Tags

CCSS.8.EE.B.5

Front

What does 'b' represent in the equation y=mx+b?

Back

The y-intercept (b) is the value of y when x=0.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

How do you identify the slope from a graph?

Back

The slope is the rise over run, calculated as the change in y divided by the change in x.

Tags

CCSS.8.EE.B.5

Front

What is the y-intercept in the equation y=2x + 3?

Back

The y-intercept is 3.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

How can you write the equation of a line given two points?

Back

Use the slope formula to find m, then use point-slope form to write the equation.

Front

What is the slope of the line represented by the equation y=-x + 2?

Back

The slope is -1.

Tags

CCSS.8.EE.B.5

Front

What does a positive slope indicate about a line?

Back

A positive slope indicates that as x increases, y also increases.

Tags

CCSS.8.EE.B.5

Front

What does a negative slope indicate about a line?

Back

A negative slope indicates that as x increases, y decreases.

Tags

CCSS.8.EE.B.5

Front

How do you convert a slope-intercept form to standard form?

Back

Rearrange the equation to the form Ax + By = C.

Front

What is the equation of a horizontal line?

Back

The equation of a horizontal line is y = b, where b is a constant.