Khan Academy Algebra 2 Unit 6

What MISTAKE was made when simplifying the following?

• They forgot to multiply the 2 by 5. There should be a lead coefficient of 10 in the simplified answer.

• They should have multiplied the exponents of 3 and 5 together to get x raised to the 15th power.

• The did not apply the exponent of 5 to the coefficent of 2. The exponent should apply to everything in parenthesis.

• No mistake was made, it is simplified correctly.

• The answer should be x = 30

Find the mistake!

• The bases of 1/4 and 8 were not correctly rewritten from step 1 to step 2

• The exponents should have been ADDED from step 2 to step 3.

• The bases can not be dropped from step 3 to step 4.

• The equation was not correctly solved from step 4 to step 5.

Are there any mistakes made in the equation solving process from step 1 to step 2 below? If so describe the mistake.

• No mistakes were made, step 1 to step 2 is correct!

Which equation represents the graph?

• y = 3x + 15

• y = 1/5 x + 15

• y = -1/5 x + 3

• y = 15x + 3

In the equation, y = mx + b, the letter b is the ___________.

• y-intercept

• x-intercept

• slope

• rate of change

What are the x- and y-intercepts of the linear function given by the equation 3x + 4y = 12

• (4, 0) and (0, -3)

• (-3, -4)

• (-4, 0) and (0, 3)

• (4, 0) and (0, 3)

Which set of values is a function?

• <(9,5), (10,5), (9,-5), (10,-5)>

• <(3,4), (4,-3), (7,4), (3, 8)>

• <(6,-5), (7, -3), (8, -1), (9, 1)>

• <(2, -2), (5, 9), (5, -7), (1, 4)>

Is this table a function or not a function? 

• Function

• Not a Function

Does the graph below represent a function?

• Yes, it represents a function because each input is paired with exactly one output.

• No, it does not represent a function because not every input is paired with exactly one output.

What is f(6) for the function f(x)=3x-8

• -8

• 10

• -144

• answer not here