Algebra 1 Review

Front

What is a positive correlation?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What is a negative correlation?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does 'no correlation' mean?

Back

No correlation means there is no relationship between the two variables; changes in one do not affect the other.

Front

How do you solve the system of equations 3x + 2y = 16 and 7x + y = 19?

Back

The solution is (2, 5).

Front

What is the equation of the line of best fit?

Back

Front

What is the formula for the slope of a line?

Back

Front

What is the slope of the line containing points (2, -1) and (3, 5)?

Back

The slope is 6.

Front

How do you write a system of equations for two pizza companies with different pricing?

Back

The system is: y = 6.80 + 0.90x and y = 7.30 + 0.65x.

Front

What does it mean for two lines to intersect?

Back

Two lines intersect when they have one point in common, which is the solution to their system of equations.

Front

What is the y-intercept of the line y = 3x + 7?

Back

The y-intercept is 7.