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2 years ago

Olivia is making 15 bead bracelets for her friends what is the proportional relationship?

Mathematics

1 answer:

yanalaym [24]2 years ago

6 0

5 minutes per bracelet.

because 15/3 = 5 mins.

To find the constant of proportionality in minutes per bracelet, divide the total time by the number of bracelets:

constant of proportionality =15/3= 5 minutes.

Now, we're going to consider an example of a proportional relationship in our everyday life: When we put gas in our car, there is a relationship between the number of gallons of fuel that we put in the tank and the amount of money we will have to pay. In other words, the more gas we put in, the more money we'll pay.

Learn more about the proportional relationships at

brainly.com/question/12242745

#SPJ4

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3 years ago

QUESTION 9 1 POINT Find the equation of a line that contains the points (-2,-5) and (3, -1). Write the equation in slope-interce

svet-max [94.6K]

Answer:

If only slope:

$y = \frac{4}{5}x + b$

If slope and y-intercept:

$y = \frac{4}{5}x - 6.6\\or\\y = \frac{4}{5}x - 3.4$

*both are correct answers see steps below*

Step-by-step explanation:

The equation to find the slope is $\frac{y_{2} - y_{1}}{x_{2} - x_{1}}$ .

The equation for slope-intercept form is $y = mx + b$ .

First, find the slope between two points.

$\frac{-1 - (-5)}{3 - (-2)} = \frac{4}{5}$

Keep the difference as a fraction if it can't be divided.

Next, plug in the slope value into the equation.

$y = \frac{4}{5}x + b$

If you also need to find what b is, pick a point; (-2, -5) OR (3, -1). Then fill in the equation with it's x and y values. (I'll do both points to show two different results).

Point (-2, -5):

$(-5) = \frac{4}{5}(-2) + b$

$(-5) = (-1.6) + b$

Add 1.6 on both sides to isolate the b. (since -1.6 is a negative, we need to cancel it out with its opposite)

$b = -6.6$

Point (3, -1):

$(-1) = \frac{4}{5}(3) + b$

$(-1) = (2.4) + b$

Subtract 2.4 on both sides to isolate the b. (since 2.4 is a positive, we need to cancel it out with its opposite)

$b = -3.4$

It does mean that both slopes have different y-intercepts but it overly depends on the point. These steps will ensure you to the correct answer.

3 0

2 years ago

Rewrite 7x + 4 = x – 2 as a system.

s344n2d4d5 [400]

7x + 4 = x - 2 -- (1)

To rewrite the equation above as a system, we simply let (1) be equal to y, i.e.

7x + 4 = x - 2 = y -- (2)

Recall from the rule of transitivity: If a = b = c, then this implies that a = c & b = c. From this, we have (2) to be expressed as

y = 7x + 4 -- (i)
y = x - 2 -- (ii)

Note: (i) & (ii) are both regarded as a system of linear equation which can be evaluated simultaneously.

3 0

3 years ago