Algebra 1 Semester 1 Review

Front

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

Back

The slope represents the rate of change of the dependent variable with respect to the independent variable.

Front

Write the equation to find how much money Sandra has on her iTunes gift card after x months if she starts with $20 and spends $3 each month.

Back

y = -3x + 20

Front

Is the equation y = 2x + 3 linear or exponential?

Back

Linear

Front

What does the slope of the function H(t) = -0.25t + 6 represent?

Back

The height of the candle will decrease by 0.25 inches per hour.

Front

Write an equation that models the cost of car repairs if the mechanic charges $140 for parts and $48 per hour for labor.

Back

y = 48x + 140

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line and can be expressed in the form y = mx + b.

Front

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

Back

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

Front

How do you determine if a function is linear?

Back

A function is linear if it can be written in the form y = mx + b, where m and b are constants.

Front

What is the significance of the y-value in the equation y = -3x + 20?

Back

The y-value represents the amount of money left on the gift card after x months.

Front

What does it mean if the slope of a line is negative?

Back

A negative slope indicates that as the independent variable increases, the dependent variable decreases.