All categories

4 years ago

Which is a linear function?

Mathematics

1 answer:

oee [108]4 years ago

7 0

Answer:

Step-by-step explanation:

A linear function describes a straight line with constant gradient. Hence A is the answer as it has a constant gradient of -1 .

B is wrong as the graph has an undefined gradient.

C is wrong as it has an increasing gradient.

D is wrong as it does not have a constant gradient too.

You might be interested in

Roger Roofing company wants to buy twenty eight

Soloha48 [4]

2,766.12 multiply 98.79 x 12

7 0

3 years ago

Jill pays $16,000 for shares in a new company. She sells the shares 8 years later for

Alex73 [517]

16,000 paid

8 years passed

12,000 returned

-4000 difference

-4000/16,000 x 100%

-25% (Answer)

6 0

3 years ago

600 units of electricity and 100 units of gas were used for a total cost of $388. Next month, 400 units of electricity and 150 u

lana66690 [7]

Answer:

Cost per Electricity Unit= $0.61

Cost per Gas Unit= $0.22

Step-by-step explanation:

Suppose,

Cost per Electricity Unit: e

Cost per Gas Unit: g

for the first month condition, equation would be

$600*e+100*g=388...........................................(i)$

and for the next month condition, equation would be like

$400*e+150*g=277...........................................(ii)$

By solving both linear equations simultaneously, we get

e=0.61 and g=0.22

7 0

4 years ago

Please anwser fast !!

tiny-mole [99]

Answer:

y = 10x - 2

Step-by-step explanation:

From the table attached,

Let the equation of a line passing through two points $(x_1,y_1)$ and $(x_2,y_2)$ is,

y = mx + b

Here, m = slope of the line

b = y-intercept

Since, m = $\frac{y_2-y_1}{x_2-x_1}$

Slope of the line passing through (0, -2) and (1, 8) will be,

m = $\frac{8+2}{1-0}$

m = 10

y-intercept 'b' = -2 [Output value at x = 0]

Therefore, equation of the line will be,

y = 10x - 2

5 0

3 years ago

A company manufactures two types of fishing rods, standard and folding. The cost of manufacturing 2 folding rods and 1 standard

Mrac [35]

Answer:

Step-by-step explanation:

A company manufactures two types of fishing rods, standard and folding. The cost of manufacturing 2 folding rods and 1 standard is $35. If 5 standard and 7 folding rods were manufactured, the cost would be $145. How much does it cost to manufacture each type of rod.

let S = standar rod

F= folding rod

2F + S =35

2F + S -2F =35 - 2F

or S = 35-2F

7F + 5S =145

7F + 5S -7F =145 -7F

or 5S =145-7F

Since S=35-2F

5S = 5X (35-2F)

5S = 175 -10F

which equals 145-7F

175-10F = 145-7F

175-10F +10F = 145 -7F + 10F

175 = 145 +3F

175 -145 =145 -145 + 3F

30 = 3F

F = 10

but S =35 - 2F

so S = 35 -2X10

S = 35-20 =15

check:

if F = 10 and S = 15

then 5S +7F should equal 145

5X15 + 7X10 = 75 + 10 =145

so F=10, S=15

7 0

2 years ago