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Charra [1.4K]
3 years ago
7

A line intersects the point (-3,-7) and has a slope of -3. what is the slope intercept equation for this line?

Mathematics
1 answer:
ddd [48]3 years ago
5 0

Answer:

-3

Step-by-step explanation:

y = -3x + b

-7 = -3(-3) + b

-7 = 9 + b

-16 = b

y = -3x - 16

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Someone help me asap​
Xelga [282]

miles= 30 × hours

use this equation to fill out the graph and find out what y (miles traveled) equals.

for example, multiply 5 (the hours passed) by 30. Your answer would be 150, which is the miles the biker would travel in 5 hours.

5 0
3 years ago
What is the slope of the line containing (-2,5) and (4, -4)?
Musya8 [376]

Answer: slope is -3/2

Step-by-step explanation:

(-2,5) (4,-4)

Use the slope formula y2-y1/x2-x1

5-(-4)/-2-4 = -3/2

6 0
3 years ago
Read 2 more answers
The height of a cable that runs between two supports on a suspension bridge can be modeled by a quadratic function () where is t
Murrr4er [49]

What is the vertex

Its vertex is at (36, -10)

Let us assume that the left edge of the cable is at the origin.

Since the cable is at its lowest height 10 feet halfway between the two supports, the y-coordinate of its lowest point is -10 ft and the x coordinate is 72 ft/2 = 36 ft.

So, its vertex is at (36, -10)

Axis of symmetry

The y-axis.

Since the cable is symmetric about its lowest point, the axis of symmetry is the y-axis.

Domain

The domain is (0, 72).

Since the minimum value of its x-coordinate is at the origin which is x = 0 and the maximum value is at the other support which is at x = 72 ft,

the domain is (0, 72).

Range

The range is (0, -10)

Since the minimum value of the y-coordinate is -10ft and the maximum value is at the origin y = 0,

the range is (0, -10)

x and y-intercepts

The x-intercept is (0, 72) and the y-intercept is (0, 0)

Since the cable is attached at the origin and at 72 feet away  from the origin at the other support, the x-intercept is 0 and 72 ft and the y-intercepts are 0 and 0.

So, the x-intercept is (0, 72) and the y-intercept is (0, 0)

Learn more about quadratic functions here:

brainly.com/question/10606041

5 0
2 years ago
Paula knows the total cost for 100 students will be $750, and the cost total cost for 150 students is $1050. What is the caterer
Roman55 [17]

Step-by-step explanation:

the price charged for 100 students reflects the cost per student that applies to the order as a whole.

100 * 6 = $600, so the fixed cost is 750-600 = 150.

...

We can check this by substituting in the other equation.

Does 150*6 + 150 = 1050?

150*6=900

900+150 = 1050.

Yes, it does

...

We can express this relationship by the equation:

y = mx + b

where

y = total cost

m = $6 per student

x = number of students

b = fixed costs = 150

y = 6x + 150

8 0
3 years ago
The stores markup on a wholesale item is 40%. The store is currently having a sale, and the item sales for 25% off the retail pr
Maurinko [17]

Answer:

75%

Step-by-step explanation:

7 0
3 years ago
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