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Jobisdone [24]
2 years ago
7

Help please! Could you explain it too?

Mathematics
1 answer:
Anettt [7]2 years ago
3 0

Answer:

a) not proportional

b) proportional; k = -\frac{3}{5}

Step-by-step explanation:

a) for any proportional equation, the line must pass through the origin. The equation in a) is y = 4x + 1, and the '+1' is the y-intercept. This means that the line does not pass through the origin, so x and y cannot increase by the same amount (i.e. they are not proportional).

Another way to determine this is is to use the y = kx base. If you have an equation that fits that it's likely proportional.

Here, if the equation was only y = 4x then it'd be proportional because u can see that k = 4. This is not the equation though, and the 4x + 1 doesn't fit to the y = kx formula so it can't be proportional.

b) straight away you can see that there's no 'c' term (y = mx + c) which means the y-intercept is 0, so the line passes through the origin. While this does not immediately mean the line is proportional, you can make sure that it is by checking it fits with the y = kx equation.

y = -(3/5)x fits with y = kx, with k being -3/5

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What is the graph of the function rule?<br><br> y = 3x - 2<br><br> Choose from the pictures
bulgar [2K]

we have

y=3x-2

we know that

this is the equation of a line, to identify which is the graph we will proceed to determine the points of intersection with the coordinate axes

1) <u>Find the y-intercept</u>

the y-intercept is when the value of x is equal to zero

For x=0

find the value of y

y=3*0-2

y=-2

2) <u>Find the x-intercept </u>

the x-intercept is when the value of y is equal to zero

For y=0

find the value of x

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therefore

the answer is the option B ( see the attached figure)

5 0
3 years ago
Read 2 more answers
Pls answer this question
Pavlova-9 [17]

Answer:

Question 37:

B) 21

Step-by-step explanation:

How I found the radius:

radius= 132/ 2 x π  

r=132 / 6.2831853071796

r=21.0084525

Divide 132 by 6.2831853071796

π = 3.1415926535898

Note: Hope this Helps!

<em>-kiniwih426</em>

5 0
3 years ago
the diameter of your bicycle wheel is 34 inches.What is its radius?How far will you move in one turn if your wheel?What is the d
gulaghasi [49]

Answer:

Step-by-step explanation:

The radius of a circle is always half the radius.

Thus, in this case, the radius is (1/2)(34 in) = 17 in.

The "how far" question is answerable by finding the circumference of the wheel.  The circumference, C, is found by calculating C = πd, where d is the diameter of the circle in question.

Here, C = (34 in)π, which comes out to 106.81 inches.  The bike will move 106.81 inches forward if the wheel turns once.

If the wheel turns 5 times, the total distance traveled is 5 times the circumference, or 5(106.81 in) = 534.07 in.

6 0
3 years ago
Help with this please!!!!!!!!!!!!!!
sveta [45]

Answer:

A is the correct answer :)

8 0
3 years ago
Read 2 more answers
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