8th Winter Exam Practice #2

Front

If it is 940 miles to Daytona Beach from here, and your car averages 60 miles per hour, how long will it take you to drive there?

Back

nearly 16 hours

Front

Find the slope of the line passing through the points (-4, 3) and (-4, -7).

Back

undefined (vertical line)

Front

What is the value of the expression x^2 + y^2 + x - y when x = -1 and y = 3?

Back

6

Front

Solve for K in the equation K + 3 = 10.

Back

K = 7

Front

What inequality is graphed if the solution set includes values greater than 2 or less than or equal to -3?

Back

x > 2 or x ≤ -3

Front

What is the formula to calculate speed?

Back

Speed = Distance / Time

Front

What is the definition of slope in a linear equation?

Back

Slope is the ratio of the rise (change in y) to the run (change in x).

Front

How do you find the value of an expression with variables?

Back

Substitute the values of the variables into the expression and simplify.

Front

What does it mean for a slope to be undefined?

Back

An undefined slope occurs when a line is vertical, meaning it has no horizontal change.

Front

What is the standard form of a linear equation?

Back

Ax + By = C, where A, B, and C are constants.