Test 3.2 Review

Front

What is the y-intercept in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x is 0.

Front

Write the slope-intercept form of a linear equation.

Back

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the point (3, 27) represent in a cost context?

Back

The point (3, 27) represents $27 for 3 shirts.

Front

How do you find the slope between two points?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1).

Front

What is the slope of a line that rises 3 units for every 7 units it runs?

Back

The slope is 3/7.

Front

What does it mean if a slope is negative?

Back

A negative slope indicates that as x increases, y decreases, showing a downward trend.

Front

What is the total cost equation for renting a sailboat at $20 per hour plus $12 for life jackets?

Back

The equation is y = 20x + 12.

Front

What does the term 'undefined' mean in mathematics?

Back

Undefined refers to a value that cannot be determined, often occurring in division by zero.

Front

If you spend $2 for parking every day, what is the cost after x days?

Back

The cost is represented by the equation y = 2x.

Front

What is the meaning of the term 'intercept' in a graph?

Back

An intercept is a point where a line crosses an axis, either x or y.