Quiz about Functions Math

Question 1

The function $$f\left(x\right)=1200\left(1.31\right)^x$$ models the value of a necklace x years after its purchase.

What does 1.31 represent?

Accepted Answer

growth rate

Answer

initial value

Answer

increase in price

Answer

number of year

Question 2

Does the function $$f\left(x\right)=1200\left(1.31\right)^x$$ show a growth or decay. Why?

Accepted Answer

growth because its greater than 1

Answer

growth because its less than 1

Answer

decay because its greater than 1

Answer

decay because its less than 1

Question 3

Alan won $2000 in an essay contest. He invested the money in a savings account which pays 6% interest compounded annually.

What is Alan's investment worth after 2 years?

Accepted Answer

$2247

Answer

$2200

Answer

$2500

Answer

$3000

Question 4

Samantha took out a $20,000 loan with an interest rate of 3.4% compounded monthly.

About how much money will she owe after 5 years?

Accepted Answer

$23,700

Answer

$30,000

Answer

$20,400

Answer

$22,500

Question 5

Which graph does NOT pass the vertical line test?

Accepted Answer

Graph 1

Answer

Graph 2

Answer

Graph 3

Answer

Graph 4

Question 6

Which equation represents the following graph?

Accepted Answer

y = 2x + 3

Answer

y = 3x + 2

Answer

y = -2x + 3

Answer

y = -3x + 2

Question 7

Find the value of y when x = 2.

Accepted Answer

8

Answer

2

Answer

6

Answer

7

Question 8

Which of these represents slope-intercept form?

Accepted Answer

y = mx + b

Answer

y - y₁ = m(x-x₁)

Answer

Ax + By = C

Question 9

Which set of values is a function?

Accepted Answer

(6,-5) (7, -3) (8, -1) (9, 1)

Answer

(9,5) (10,5) (9,-5) (10,-5)

Answer

(3,4) (4,-3) (7,4) (3, 8)

Answer

(2, -2) (5, 9) (5, -7) (1, 4)

Question 10

Find the slope of the line that passes through
(10, 1) and (5, 2)

Accepted Answer

-1/5

Answer

1/5

Answer

5

Answer

-5

Question 11

What is the equation to the function of the table?

Accepted Answer

$$y=x-3$$

Answer

$$y=x+3$$

Answer

$$y=3x$$

Answer

$$y=\frac{x}{3}$$

Question 12

Which table contains the values that satisfy the following function

y = 3x + 1

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 13

What is the equation of the line in point slope form given a slope of -12 and a point of (-4, -5)?

Accepted Answer

y + 5 = -12(x + 4)

Answer

y - 5 = -12(x - 4)

Answer

y + 4 = -12(x + 5)

Answer

y - 12 = -4(x + 5)

Question 14

What is the y-intercept in the equation?

y = 5x - 4

Accepted Answer

(0,-4)

Answer

(0,5)

Answer

(-4,0)

Answer

(5,0)

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