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zloy xaker [14]
3 years ago
8

Which expression has a value of 15 when

Mathematics
1 answer:
Lelu [443]3 years ago
7 0
The expression has a value of 15 when you divide by 2.
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Find the equation of the graphed line.
GrogVix [38]

Answer:

  a.  y = -1/2x - 2

Step-by-step explanation:

The correct answer choice can be determined by finding the slope of the line. The slope is the ratio of rise to run.

__

<h3>slope</h3>

The x-intercept is 4 units left of the y-axis. As the line "runs" those 4 units, it "rises" -2 units to intercept the y-axis at -2. The slope of the line is ...

  m = rise/run = -2/4 = -1/2

In the slope-intercept form of the equation of a line, the slope is the coefficient of x. This information is sufficient to let us choose the first answer choice.

__

<h3>equation</h3>

The slope-intercept equation is ...

  y = mx +b . . . . . . . slope m, y-intercept b

We know the slope is -1/2, and the y-intercept is where x=0, at y=-2. Then the equation is ...

  y = -1/2x -2 . . . . . matches choice A

_____

<em>Additional comment</em>

When answering multiple-choice questions, you only need to do enough work to tell which answers are <em>not</em> viable.

When we plot the points, we see that the line has negative slope. (eliminates choice C). The slope is shallow, rather than steep (the x-intercept is farther from the origin than the y-intercept), so the magnitude of the slope is less than 1 and choices B and D are eliminated.

8 0
1 year ago
Give the slope of y- 4 = 5(x - 2) and a point on the line.
ValentinkaMS [17]

Answer:

<h2>B. The slope is 5 and (2, 4) is on the line.</h2>

Step-by-step explanation:

The point-slope form of an equation of a line:

y-y_1=m(x-x_1)

<em>m</em><em> - slope</em>

<em>(x₁, y₁)</em><em> - point</em>

<em />

We have the equation:

y-4=5(x-2)

Therefore

<em>m = 5</em>

<em>(x₁, y₁) = (2, 4)</em>

<em />

5 0
3 years ago
How do I add 3/8 + 2 1/2 =
Alisiya [41]

Answer:

2 7/8

Step-by-step explanation:

3/8 + 2 4/8= ?

3/8+ 4/8= 7/8

7/8+ 2 = 2 7/8

5 0
2 years ago
How do you complete a graph based on a table
EastWind [94]

by calculating the given information and the equation in table

7 0
3 years ago
Which pair of sentences explains what happens if the wire breaks? A. The wire is part of the electric circuit. The electric curr
Katyanochek1 [597]

Answer:\ a.The wire is part of the electric circuit. The electric current will not flow if it breaks

Step-by-step explanation:

Hope this helps!

4 0
3 years ago
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