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o-na [289]
3 years ago
10

What is the y-intercept of the line y = 2x - 5?

Mathematics
1 answer:
olga2289 [7]3 years ago
5 0

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept

We have y = 2x - 5, then:

slope m = 2

y-intercept b = -5

<h3>Answer: y-intercept = -5.</h3>
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The graph of linear function f passes through the point (1, -9) and has a slope of -3. What is the zero of f ?
den301095 [7]

Answer:

-2

Step-by-step explanation:

The standard equation of a line is y = mx+c

m is the slope

c is the intercept

Given

Slope = -3

Get the intercept c;

Substitute m = -3 and (1, -9) into y = mx+c

-9 = -3(1) + c

-9  = -3 + c

c = -9 + 3

c = -6

The equation becomes

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f(x) = -3x-6

The zero of f occurs at f(x) = 0

0 = -3x-6

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x = -6/3

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5 0
3 years ago
Edward is driving a car on the highway. He drives for 28.5 miles in 3/8 of an hour. At this rate, how much distance can he cover
Rom4ik [11]

The distance covered in one hour is 76 miles.

<u>Step-by-step explanation:</u>

Edward drives a car for 28.5 miles.

Therefore, the distance he travels by the car = 28.5 miles.

The time it takes to drive 28.5 miles is 3/8 of an hour.

<u>The formula to find the rate :</u>

Rate = Distance traveled / Time taken in hours.

Here, the distance is 28.5 miles and time is 3/8 hour.

Rate = 28.5/ (3/8)

<u>To find the distance covered in 1 hour :</u>

Let us assume, 'x' be the distance covered in one hour.

Rate = x/1

<u>Now, comparing the rates to find the x value :</u>

⇒ 28.5 / (3/8) = x /1

⇒ x = 28.5 \times  8/3

⇒ x = 228/3

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Therefore, the distance covered in one hour is 76 miles.

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3 years ago
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Step-by-step explanation:

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marishachu [46]

Answer:

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