Writing Equations from Various Representations

What is the general form of the equation we aim to write from tables?

• y = mx + b

• y = mx + c

• y = x + b

• y = ax^2 + bx + c

How do you calculate the slope from a table?

• Sum of x and y

• Change in y over change in x

• Difference of x and y

• Change in x over change in y

What is the y-intercept in the equation y = 4x + 7?

• 11

• 4

• 0

• 7

If the slope is 2/3 and the y-intercept is -3, what is the equation?

• y = 2/3x - 3

• y = 3x - 2/3

• y = -3x + 2/3

• y = 2/3x + 3

What does the slope represent on a graph?

• The y-intercept

• The total distance

• The rise over run

• The x-intercept

How do you identify the y-intercept on a graph?

• Where the line crosses the y-axis

• The lowest point on the graph

• Where the line crosses the x-axis

• The highest point on the graph

What is the slope if you go down 5 units and right 3 units?

• -5/3

• 5/3

• 3/5

• -3/5

In a word problem, what does the starting value represent?

• The slope

• The total cost

• The y-intercept

• The x-intercept

If the starting cost is $35 and the cost per serving is $1, what is the equation?

• y = 35x + 1

• y = x + 35

• y = 1x + 35

• y = 35 + x

In the equation y = 1.5x + 5, what does 1.5 represent?

• The total cost

• The slope

• The y-intercept

• The starting value