SJHS Math 8 Pre-Assessment 2

Front

What is the definition of a y-intercept in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis, represented as (0, b) in the equation y = mx + b.

Front

How do you calculate the rate of change in a linear function?

Back

The rate of change is calculated as the change in y divided by the change in x (Δy/Δx), representing the slope of the line.

Front

What is the general form of a linear equation?

Back

The general form of a linear equation is y = mx + b, where m is the slope and b is the y-intercept.

Front

What does it mean for a function to have a greater rate of change?

Back

A function with a greater rate of change has a steeper slope, indicating that y increases more rapidly as x increases.

Front

How do you find the total population given populations in scientific notation?

Back

To find the total population, convert each population to standard form, sum them, and convert back to scientific notation if necessary.

Front

What is scientific notation and why is it used?

Back

Scientific notation is a way of expressing numbers as a product of a number between 1 and 10 and a power of 10, used for simplifying large or small numbers.

Front

What are proportional relationships?

Back

Proportional relationships are those in which two quantities maintain a constant ratio, represented by the equation y = kx, where k is a constant.

Front

How can you identify a proportional relationship from a set of functions?

Back

A proportional relationship can be identified if the graph of the function passes through the origin (0,0) and maintains a constant ratio.

Front

What does it mean to classify numbers in mathematics?

Back

Classifying numbers involves grouping them based on shared properties, such as even/odd, prime/composite, or rational/irrational.

Front

What is the difference between a function and a relation?

Back

A function is a specific type of relation where each input (x-value) is associated with exactly one output (y-value).