Unit 3 Review

Front

What is the cost to enter the amusement park and ride one ride?

Back

$21.50 (Entry fee: $20 + Ride fee: $1.50)

Front

What is the linear equation that represents the cost of entering the amusement park and riding x rides?

Back

y = 1.5x + 20

Front

What does it mean for a graph to be proportional?

Back

A graph is proportional if it is a straight line and passes through the origin (0,0).

Front

What is the solution to the equation y = -2x + 5 when x = 2?

Back

(2, 1) because y = -2(2) + 5 = 1.

Front

What is the equation of a line with a slope of 2 and a y-intercept of 3?

Back

y = 2x + 3

Front

What type of slope does a horizontal line have?

Back

Zero Slope.

Front

What type of slope does a vertical line have?

Back

Undefined.

Front

What is the slope of the line represented by the equation y = -2x + 3?

Back

-2 (Negative slope).

Front

How do you determine if a point is a solution to a linear equation?

Back

Substitute the x-value into the equation and see if the resulting y-value matches.

Front

What is the y-intercept in the equation y = 3x + 2?

Back

2 (the point where the line crosses the y-axis).