8th Math Semester 1 Final

Front

What are the x- and y- intercepts of a graph?

Back

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

Front

How do you find the slope of a line?

Back

The slope (m) is calculated as the change in y divided by the change in x (m = Δy/Δx).

Front

What does a slope of 'undefined' indicate about a line?

Back

An undefined slope indicates a vertical line, where the x-value does not change.

Front

What does the equation D = rt represent?

Back

D = rt represents the relationship between distance (D), rate (r), and time (t).

Front

How do you solve for t in the equation D = rt?

Back

To solve for t, rearrange the equation to t = D/r.

Front

What does the equation y = mx + b represent in a linear function?

Back

In y = mx + b, m is the slope and b is the y-intercept of the line.

Front

What does a negative slope indicate about a line?

Back

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

Front

How can you interpret the equation y = -25x + 120 in a real-world context?

Back

This equation can represent a situation where a quantity decreases by 25 for every unit increase in x, starting from 120.

Front

What is the significance of the y-intercept in a graph?

Back

The y-intercept indicates the value of y when x is zero.

Front

How do you identify the x-intercept from a linear equation?

Back

To find the x-intercept, set y to 0 and solve for x.