Identifying Y-intercept(Graphs)

If a line has a slope of -1, what does that indicate about its direction?

• The line is horizontal, indicating no change in y as x changes.

• The line is vertical, indicating an undefined slope.

• The line has a downward slant from left to right, indicating that for every unit increase in x, y decreases by 1 unit.

• The line has an upward slant from left to right, indicating that for every unit increase in x, y increases by 1 unit.

What does the slope of a line represent?

• The slope of a line represents the rate of change of y with respect to x.

• The slope of a line represents the distance between two points on the line.

• The slope of a line represents the angle of the line with the x-axis.

• The slope of a line represents the total length of the line segment.

How do you find the y-intercept from a linear equation?

• Set x to 0 and find the value of y.

• Set y to 0 and find the value of x.

• Use the slope-intercept form to calculate the slope.

• Add the values of m and b.

What does a negative y-intercept indicate about a line?

• A negative y-intercept indicates that the line crosses the y-axis below the origin.

• A negative y-intercept indicates that the line is horizontal.

• A negative y-intercept indicates that the line has a positive slope.

• A negative y-intercept indicates that the line crosses the x-axis below the origin.

What is the significance of the y-intercept in real-world scenarios?

• It represents the slope of a line in a graph.

• It indicates the maximum value of a function.

• It can represent the starting value of a situation in real-world contexts, such as initial costs or starting quantities.

• It shows the relationship between two variables.

If a line crosses the y-axis at (0, 2), what is the y-intercept?

• 1

• 2

• 3

• 4

What is the y-intercept of the equation y = -2x - 6?

• -6

• -2

• 0

• 6

What is the y-intercept in a graph?

• The point where a line crosses the x-axis.

• The point where a line crosses the y-axis.

• The slope of the line at the origin.

• The value of the line at x=1.

How can you verify the y-intercept using a table of values?

• By checking the value of y when x is 0 in the table of values.

• By finding the maximum value of y in the table.

• By calculating the average of all y values in the table.

• By identifying the smallest value of x in the table.

How can you determine the y-intercept from a graph?

• Locate the point where the line intersects the x-axis.

• Locate the point where the line intersects the y-axis.

• Find the slope of the line.

• Identify the maximum point on the graph.