Unit 3: Parallel & Perpendicular Lines Homework 4: Slopes of Lines; Parallel & Perpendicular Lines Directions: Find the slope between the given two points.

7. (-1,-11) and (-6,7)

8. (-7,-13) and (1,-5)

9. (8,3) and (-5,3)

10. (15,7) and (3,-2)

11. (-5,-1) and (-5,-10)

12. (-12,16) and (-4,-2)

Directions: Use the slope to determine if lines PQ and RS are parallel, perpendicular, or neither.

13. P(-9,-4), Q(-7,-1), R(-2,5), S(-6,1)

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

-14 is the answer

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step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

the correct answer is

c. 4

step-by-step explanation:

the given polynomial is

the degree of the polynomial is the highest exponent which is 4.

the -4 is called the leading coefficient.

this polynomial has only one term so it is a monomial.

the correct answer is option c.