Unit 4 - Proportional Relationships

Front

What makes a graph proportional?

Back

A graph is proportional if it is linear and the line goes through the origin.

Front

Write the equation for the line in slope-intercept form: y = 4x + 3.

Back

The equation is already in slope-intercept form.

Front

Is this table proportional?

Back

Yes, a table is proportional if the ratio of the values is constant.

Front

How would you write the equation with a slope of 2/3 and a y-intercept of -3?

Back

y = 2/3x - 3.

Front

Is the graph proportional or non-proportional?

Back

Non-proportional.

Front

What is the definition of a proportional relationship?

Back

A proportional relationship is one where two quantities maintain a constant ratio.

Front

What does the slope represent in a linear equation?

Back

The slope represents the rate of change between the two variables.

Front

What is the y-intercept in the equation y = mx + b?

Back

The y-intercept is the value of y when x is 0.

Front

How can you determine if a set of points is proportional?

Back

If the ratio of y to x is constant for all points.

Front

What is the formula for slope?

Back

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