Lesson 7.5 Mid-Lesson Check

What type of function is f(x)=2(1/7)^x ?

• Exponential Growth
• Linear
• Exponential Decay
• None of the Above

What is the y-intercept of the function?

• 2
• 3
• 1
• -2

What type of function is y = 7(5/4)^x?

• Exponential Growth
• Exponential Decay
• Linear
• None of the above

Identify the y-intercept (initial value) in the function f(x)=13(.27)^x

• (.27)^x
• .27
• 13
• 3.51

Is the pictured graph growth, decay, or linear or none?  

• Exponential Growth
• Exponential Decay
• Linear
• None

What type of function is this?

• Exponential Growth

• Exponential Decay

• Linear

Which is an exponential function?

• y = mx + b

• y - y₁ = m(x - x₁)

• y = ab^x

In an exponential function, what does the 'a' represent? 

• SLOPE
• RATE OF CHANGE
• Y-INTERCEPT
• COMMON RATIO