8th Math Semester 1 Review

Front

What is the solution to the inequality: x > 3 and x ≤ 6?

Back

The solution is x ≤ 3 or x > 6.

Front

What kind of slope does a line that rises from left to right have?

Back

Positive slope.

Front

Is the relation a function if the x-value 11 has two y-values paired with it?

Back

No, because the x-value 11 has two y-values paired with it.

Front

Solve for c in the equation: 2c + 3 = 5.

Back

c = 1.

Front

What is the x-intercept of the graph of the equation y = 2x + 8?

Back

(-4, 0).

Front

What does it mean for a relation to be a function?

Back

Each x-value must have only one y-value paired with it.

Front

What is the slope of a horizontal line?

Back

Zero slope.

Front

What is the slope of a vertical line?

Back

Undefined slope.

Front

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

Back

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

Front

What is the definition of an x-intercept?

Back

The x-intercept is the point where the graph crosses the x-axis (y=0).