Graphing Linear Equations in Slope-Intercept Form

What is the formula for calculating the slope of a line given two points?

• m = (y2 + y1) / (x2 + x1)

• m = (x2 - x1) / (y2 - y1)

• m = (y2 - y1) / (x2 - x1)

• m = x2 + x1 - y2 - y1

What type of slope does a line have if it moves from left to right upwards?

• Positive

• Negative

• Zero

• Undefined

Which type of line corresponds to a zero slope?

• Decreasing line

• Increasing line

• Horizontal line

• Vertical line

How can you calculate the slope if you have a graph?

• Count the rise over the run on the graph

• Multiply the x-coordinates and divide by y-coordinates

• Add all the points and divide by the number of points

• Use the midpoint formula

What does the slope-intercept form of a linear equation look like?

• b = mx + y

• x = my + b

• y = mx - b

• y = mx + b

In a table of values for a line, if you pick any two points, what should be true about the slope calculated from those points?

• The slope can vary

• The slope should be undefined

• The slope should be the same

• The slope should be zero

What is the y-intercept in the equation y = 3x - 4?

• 3

• -4

• 4

• 0

How do you find the x-intercept of the equation 2x + y = 2?

• Subtract y from both sides

• Add 2 to both sides

• Set x = 0 and solve for y

• Set y = 0 and solve for x

What does an undefined slope indicate about a line?

• The line is decreasing

• The line is horizontal

• The line is vertical

• The line is increasing

In the context of a linear function where the dependent variable increases by 3 for every increase of 1 in the independent variable, what is the slope?

• 0

• 1/3

• 3

• -3