8th Unit 3 Test Review: Linear Relationships

Front

What is the total cost if a pizza restaurant charges $6 for delivery and $15 per pizza for 2 pizzas?

Back

$36

Front

Which graph increases the fastest?

Back

Graph a

Front

Write an equation to show if Mark spent a total of $42 on guitar strings ($8 each) and picks ($1 each).

Back

x + 8y = 42

Front

How do you graph the cost of a streaming service that costs $20 to sign up and $5 per month?

Back

Start at $20 on y-axis and count rise/run up 5 and right 1 from starting point.

Front

How do you know if an (x,y) ordered pair is a solution of an equation?

Back

Plug into equation to see if TRUE.

Front

What is a linear relationship?

Back

A relationship that can be represented by a straight line on a graph.

Front

What does the slope of a line represent in a linear equation?

Back

The rate of change of the dependent variable with respect to the independent variable.

Front

What is the y-intercept in a linear equation?

Back

The value of y when x is 0, representing the starting point of the line on the y-axis.

Front

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

Back

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

Front

What is the equation of a line in slope-intercept form?

Back

y = mx + b, where m is the slope and b is the y-intercept.