IM 8 Unit 3 Test

Front

What is the equation of a vertical line that passes through x = -4?

Back

x = -4

Front

What does the equation y = -2x + 4 represent?

Back

A linear equation with a slope of -2 and a y-intercept of 4.

Front

How do you find the total cost for x months if the initial cost is $200 and the monthly charge is $50?

Back

Total cost = 200 + 50x

Front

What is the slope of the line represented by the equation y = -2x + 4?

Back

The slope is -2.

Front

What does the y-intercept represent in the equation y = -2x + 4?

Back

The y-intercept is the point where the line crosses the y-axis, which is (0, 4).

Front

What is the general form of a linear equation?

Back

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

Front

What is the solution to the equation 0.5s + 4a = 15 when solving for a?

Back

a = (15 - 0.5s) / 4.

Front

What type of graph represents a constant function like y = 4?

Back

A horizontal line.

Front

What does the equation y = 4 represent in terms of graphing?

Back

A horizontal line at y = 4.

Front

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

Back

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