8th Winter Exam Practice #3

Front

Solve for x: \(\frac{x+2}{6}+\frac{x+4}{8}=9\)

Back

x = 28

Front

What is the slope of a horizontal line?

Back

The slope is zero.

Front

What is the slope of a vertical line?

Back

The slope is undefined.

Front

Find the slope between the points (1, 2) and (4, 6).

Back

The slope is \(\frac{4-2}{1-4} = \frac{2}{-3} = -\frac{2}{3}\)

Front

What is the algebraic notation for the inequality graphed here? (x is between -3 and 1)

Back

-3 < x < 1

Front

Solve for y: 5x - y = 16

Back

y = 5x - 16

Front

What is the formula for the slope between two points (x1, y1) and (x2, y2)?

Back

The slope (m) is given by \(m = \frac{y2 - y1}{x2 - x1}\)

Front

What does it mean if a slope is positive?

Back

It means that as x increases, y also increases.

Front

What does it mean if a slope is negative?

Back

It means that as x increases, y decreases.

Front

What is the slope of the line represented by the equation y = 3x + 2?

Back

The slope is 3.