Slope and the y - intercept

Find the slope in the data points in the table.

• -2/3

• 1/3

• 1

• 3

What would happen to the equation y = x if its graph were shifted 6 units down?

• y = 6x

• y = -6x

• y = x - 6

• y = x + 6

Explain how the slope of  y = 2x + 3 can be used to graph the equation. From (___), move _ units __ and _ unit _____.

Write the equation of a line that is steeper than the line y = 2x + 2  but has y-intercept of -3.

• y = 3x - 3

• y = x - 3

• y = 4x + 3

• y = x + 3

Write the equation of the line graphed below.

What is the constant of variation?

• 1/2

• 1

• 2

• none of these

Which graph shows direct variation?

• A

• B

In a direct variation, y = 20 when x = 2. Write a direct variation equation that shows the relationship between x and y.

(Write your answer as an equation with y first, followed by an equals sign. Do not use space between each characters.)

If y varies directly with x and y = 6 when x = 3 , find y when x = 2.

• 2

• 3

• 4

• 5

A direct variation includes the points (2 , 14) and (n , 7). Find n.