Test 3.2 Review

Front

What does the point (3, 27) represent?

Back

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

Front

Write the equation in slope-intercept form for the total cost of renting a sailboat at $20 per hour plus $12 for life jackets.

Back

y = 20x + 12

Front

What is the equation of the line with a slope of -4/5 and a y-intercept of 3?

Back

y = -4/5x + 3

Front

How do you find the rate of change from a linear equation?

Back

The rate of change is the slope of the line.

Front

What is the rate of change for the equation y = -4/5x + 3?

Back

-4/5

Front

Solve for x in the equation 2x + 6 = 12.

Back

x = 3

Front

What is slope-intercept form?

Back

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

Front

If the slope of a line is -1/3, what does this indicate about the line?

Back

The line decreases as it moves from left to right.

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis.

Front

How do you determine the slope from two points (x1, y1) and (x2, y2)?

Back

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