Answer: Horizontal

Equation will be y=some number (no x)

Question: A line with an undefined slope is what type of line and has what type of equation?

Answer: Vertical

Equation will be x = some number (no y)

Question: What kind of slope does the following graph have?

Answer: Negative

Question: What type of slope will a line with the equation

Answer: slope of zero

Question: Describe two possible ways to use the slope -3/4 to graph a point on a line.

Answer: You could use -3/4 and go 3 down and 4 to the right

OR

You could use 3/-4 and go 3 up and 4 to the left

Answer: y-intercept

Question: A y-intercept is the point where the graph crosses the _______________

An x-intercept is the point where the graph crosses the _____________

Answer: y axis

x axis

Question: Find the x and y intercepts for the following equation:

5x - 5y = 10

Answer: x-intercept = 2 or (2,0)

y-intercept = -2 or (0, -2)

Question: What are the coordinates of the x and y intercepts of this graph?

Answer: x-intercept (-3, 0)

y-intercept (0, 6)

Question: What are the x and y intercepts for the following equation?

7x - 3y = 12

Answer: x-intercept = 12/7 or 1 5/7 or (12/7, 0)

y-intercept = -4 or (0, -4)

f(x) = 10x - 5

Answer: f(x) = 45

Question: If f(x) = 10 what is x for the following function?

f(x) = 3x - 2

Answer: x = 4

Question: Find f(x) if x = 6 for the following function.

f(x) = 1/2x - 5

Answer: f(x) = -2

Question: If f(x) = 10 what is x for the following function?

f(x) = 1/2x - 2

Answer: x = 24

Question: What is the function for this graph?

Answer: f(x) = 3/2x + 6

Answer: slope intercept

Question: Solve this equation for y:

4x + y = 12

Answer: y = 12 - 4x or y = -4x + 12

Question: Solve for y.

2x - 2y = 12

Answer: y = -6 + x or y = x - 6

Question: Solve the following equation for y,

2y + 5x = 13

Answer: y = 13/2 - 5/2x OR y = -5/2x + 13/2

Question: Does the following equation show direct variation? If yes, what is the constant of variation?

2x - 4y = 0

Answer: Yes, the constant of variation is 1/2

Answer:

Question: Describe how to use a slope of 2/3 to graph a point on a line.

Answer: Move up 2 and to the right 3 to get from one point to the next.

Question: What is the y-intercept and the slope for the following equation.

2y + 9x = 18

Answer: y-intercept = 9

slope = 9/2

Question: What type of line would this equation graph?

x = 9

Answer: A vertical line going through the point where x = 9.

Question: Besides using the slope and y-intercept, what is one other way to graph a line if you are giving an equation?

Answer: Make a table of values and graph them OR find the x and y intercepts and graph them.