Math 8, CORE Semester 1 Final Exam

Front

Simplify the expression: 7b + 4t + 3t + 4c – 9t + c – 7k – b + 4b

Back

10b – 2t + 5c – 7k

Front

Write a rule in y = mx + b form for the given graph: y = -2x + 1

Back

The slope (m) is -2 and the y-intercept (b) is 1.

Front

Simplify the expression: (4b)^2

Back

16b^2

Front

Identify the slope (rate) and y-intercept from the table: Slope(rate) = 3; y-intercept = -2

Back

The slope is 3 and the y-intercept is -2.

Front

Solve the proportion: What is the solution?

Back

3.75

Front

What is the definition of a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What is the formula for the slope of a line?

Back

Slope (m) = (y2 - y1) / (x2 - x1) where (x1, y1) and (x2, y2) are two points on the line.

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis.

Front

What is the distributive property?

Back

a(b + c) = ab + ac; it allows you to multiply a single term by two or more terms inside a parenthesis.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers and variables without an equality sign, while an equation states that two expressions are equal.