20 questions, please show work done to get the answer you got.

The following video should be helpful for problem #10

Quiz 2. Please submit the answers in the assignment folder.

1. Write the equation of the line that contains the

points

and

(2,3) in the slope intercept form.

2. Find the coordinates of the x-intercept and the y-intercept of the

line with equation

3 x − 2 y = 12

3.Find the slopes of the two lines shown below

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4.

Given that the lines shown below are perpendicular lines, find the

slopes of the lines

5.Find an equation of the line that contains the point (3,−2) and is

parallel to the line 3 x + 2 y = 2

6. Find an equation of the line that contains the point (− 5,2) and is

perpendicular to the line 5 x + 10 y = 7

7. Find an equation of the line passing through (2,5) and

perpendicular to x=1

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8. Write the domain and the range of the function whose graph is

shown below.

9. The following graph shows a relationship between the square

footage in a house and the selling price in 100s of dollars. Use the line

to predict the selling price of a house with 2500 sqft of area.

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10.

The table shows the tips left by 5-guests at a restaurant and the price

of the food (check) that was served. The amounts are in UD dollars.

Check

239.56

179.85

110.56

80.46

156.97

Tip

50

20

30

6.5

35

Use you calculator or a computer program to find an equation of the

regression line.

11. Find f (− 1) if f ( x ) =

x +1

x +1

2

12.

Write the value of f(3) to the nearest whole number.

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13. The coordinates of the end points of a diameter of a circle are

(− 2,1) and (4,13) .

a) Write the coordinates of the center of this circle.

b) Write the length of a radius.

c) Write an equation of this circle.

14. For an income over $10000, a state charges a fixed tax of $300

plus 6.5% of the income in excess of $10000.

a) Calculate the income tax for a person with an income of $80000.

b) If Mike paid $7508.50. What was Mike’s income?

15. The percentage score in a face to face class varies directly

according to the number of classes attended. Rima receives 80% for

attending 56 classes.

a) How many classes should Rima have attended to receive 90%?

b) Jim had attended 42 classes, what should be the percentage score

of Jim?

16. Write the solution of the inequality

interval notation.

17. Find the zero of the function

18. Solve the equation

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− 3 2x − 5 13 in the

f (x) = 3x − 12

2x

x

−1 =

5

3

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19. Which of the following is a graph of

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3 x − 7 y = 14 ?

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20. Which of the following graphs represent a function?

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