2nd 9 Weeks Review

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is the slope-intercept form of a linear equation?

Back

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

Front

How do you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope and different y-intercepts.

Front

What is the equation of a line with slope m = -3 and y-intercept b = 5?

Back

The equation is y = -3x + 5.

Front

If Bob saves $40 per month starting with $150, what is the equation representing his savings?

Back

The equation is y = 40x + 150, where y is the total savings after x months.

Front

What is the total cost equation for x tickets if one customer bought 4 tickets for $160 and another bought 8 for $300?

Back

The equation is y = 35x + 20, where y is the total cost in dollars.

Front

Back

Front

What is the meaning of the y-intercept in a linear equation?

Back

The y-intercept is the value of y when x = 0; it represents the starting point of the line on the y-axis.

Front

What is the significance of the slope in a linear equation?

Back

The slope indicates the rate of change of y with respect to x; it shows how steep the line is.

Front

How can you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

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