Algebra 1 Midterm Exam

Front

What is the formula to calculate the slope of a line given two points (x1, y1) and (x2, y2)?

Back

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

Front

What is slope-intercept form of a linear equation?

Back

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

Front

How do you convert the standard form of a linear equation (Ax + By = C) to slope-intercept form?

Back

Solve for y to isolate it on one side of the equation.

Front

What does a positive slope indicate about a line on a graph?

Back

A positive slope indicates that as x increases, y also increases.

Front

What does a negative slope indicate about a line on a graph?

Back

A negative slope indicates that as x increases, y decreases.

Front

What is the correlation when a line of best fit slopes upwards?

Back

Positive correlation: as one variable increases, the other variable also increases.

Front

What is the correlation when a line of best fit slopes downwards?

Back

Negative correlation: as one variable increases, the other variable decreases.

Front

How do you solve a linear equation with one variable?

Back

Isolate the variable on one side of the equation using inverse operations.

Front

What is the solution to a system of equations?

Back

The point(s) where the equations intersect on a graph.

Front

What does it mean if a system of equations has no solution?

Back

The lines are parallel and never intersect.