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Sphinxa [80]
2 years ago
8

4. A straight line passes through points (3, 12) and (7,4). What is the equation of the line?

Mathematics
2 answers:
jeyben [28]2 years ago
6 0

Answer:

slope is -2 (-8/4)

point slope formula y=y1=m(x-x1) m slope (x1, y1) point

 y-4=-2(x-7)

y=-2x+18

Arte-miy333 [17]2 years ago
4 0

Answer:

y=-2x+18

Step-by-step explanation:

Since the y-value is going down, we can assume that the line is going negative.   As the midpoint is (5, 8), you should subtract 2 units from 3 and 4 units from 12 to get (1, 16) and therefore to get to (-1, 20), since the y-intercept is 18, the slope is 2, and it is going negative, your final answer is y=-2x+18.

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the ordered pairs (0,-1),(1,0),(2,3),(3,8),(4,15) represent a function what is a rule that represents this function? Please help
yarga [219]

Answer:

The function rule is

f:  x\to \:  {x}^{2}  - 1

Step-by-step explanation:

The given ordered pairs are (0,-1), (1,0),(2,3),(3,8),(4,15)

We can observe the following pattern.

f(0) =  {0}^{2}  - 1 =  - 1

f(1) =  {1}^{2}  - 1 = 0

f(2) =  {2}^{2}  - 1 = 3

f(3) =  {3}^{2}  - 1 = 8

f(4) =  {4}^{2}  - 1 = 15

When we generalize this pattern, we obtain:

f(x) =  {x}^{2}  - 1

This is the function equation.

The function rule is

f:  x\to \:  {x}^{2}  - 1

8 0
3 years ago
PLZ HELP ASAP!! (Algebra)
svp [43]

Answer:

Rational, integers, whole, natural, real

Step-by-step explanation:

109 is rational because it can be expressed as the ratio of two integers: 109:1

109 is integer because it can be written with no fractions

109 is a whole number because it has no decimals

109 is natural because it is an integer greater than 0

Hope this helps! ;)

6 0
3 years ago
if you put $1650 into a saving account with a simple interest rate of 2.3%, how much interest would you accrue after 7 years
Ber [7]
You would recieve $37.95 a year then multiply that by 7 years to get $265.65
6 0
3 years ago
At a local high school, the probability that a student has a job and a car is 0.18. Jackson wants to find the probability that a
makvit [3.9K]
<span>D. the probability that a student has a car or job 

</span>
3 0
4 years ago
Read 2 more answers
How is this supposed to be solved, i don’t really understand.
dezoksy [38]

Answer:

$2561.99 a quarter

Step-by-step explanation:

Just add together what they pay every year, then multiply by 25.5% (because that's the quarterly premium.)

Annual cost = insurance + dental + vision

                    = 8900 + 772 + 375 = $10047 a year.

Quarterly cost = 25.5% of annual cost

   Whenever you see of, think of multiplication!

   25.5% = .255

Quarterly cost = .255 * 10047 = <u>$2561.99 a quarter</u>

5 0
3 years ago
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