Algebra 1 Semester 1 review

Front

What is the definition of slope in a linear equation?

Back

The slope is a measure of the steepness of a line, calculated as the change in y divided by the change in x (rise/run).

Front

How do you calculate the slope given two points (x1, y1) and (x2, y2)?

Back

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

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

How do you solve the equation 4 = 2(x + 3)?

Back

First, divide both sides by 2: 2 = x + 3. Then, subtract 3 from both sides: x = -1.

Front

What does it mean to simplify a fraction?

Back

To simplify a fraction means to reduce it to its lowest terms by dividing the numerator and denominator by their greatest common factor.

Front

Back

Front

What is the formula to calculate percentage?

Back

Percentage = (Part/Whole) * 100.

Front

If Sally got 22 questions wrong on a quiz of 40 questions, how do you find the percentage of questions she got wrong?

Back

Percentage wrong = (22/40) * 100 = 55%.

Front

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

Back

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