Slope Intercept Quiz

What is the formula for finding the slope of a line?

• (y2 - y1) / (x2 - x1)

• (y1 - y2) / (x1 - x2)

• (x2 - x1) / (y2 - y1)

• (y2 - y1) * (x2 - x1)

Find the slope of the line passing through the points (2, 5) and (4, 9).

• 2

• 5

• 4

• 3

What is the formula for finding the y-intercept of a line?

• y = mx + b

• y = mx + d

• y = mx + a

• y = mx + c

Find the y-intercept of the line with equation y = 3x + 2.

• 0

• 2

• 3

• -2

What is the slope-intercept form of a linear equation?

• y = mx^2 + b

• y = mx + b

• y = mx - b

• y = ax + b

Write the equation of a line with slope 2 and y-intercept -3.

• y = 2x - 3

• y = 2x + 3x

• y = -2x - 3

• y = 2x + 3

How do you graph a linear equation using slope-intercept form?

• Identify the slope and use the y-intercept to find additional points.

• Identify the y-intercept and use the slope to find additional points.

• Plot the x-intercept and use the slope to find additional points.

• Use the y-intercept and the slope to find the x-intercept.

Graph the line with equation y = -2x + 4.

• The line with equation y = -2x + 4 is a horizontal line.

• The line with equation y = -2x + 4 is a straight line that passes through the points (0, 4) and (2, 0).

• The line with equation y = -2x + 4 is a vertical line.

• The line with equation y = -2x + 4 is a curve.

What are some real-life scenarios where slope-intercept form is used?

• Calculating phone plan costs, analyzing temperature changes, predicting population growth

• Determining the speed of a moving object, calculating the cost of a taxi ride, predicting stock market trends

In a real-life scenario, if the slope of a line represents the rate of change, what does the y-intercept represent?

• maximum value

• average value

• final value or ending point

• initial value or starting point