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Dahasolnce [82]
2 years ago
13

Find the value of 9x + 2 given that -5x-3=2​

Mathematics
1 answer:
Sloan [31]2 years ago
7 0

-5x-3 = 2\\-5x=5\\x = -1

Now plug the x value into 9x + 2

9(-1)+2) = -7

Hope that helps!

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maxonik [38]

Answer:

He needs 92 on his last test.

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In this question:

Scores of 85, 89, 85, 89 and x(the last one).

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6 0
3 years ago
The relationship shown is linear. Write the equation of the line in slope intercept form (y=mx+b).
slega [8]

Answer:

y=mx+b                Example:

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rewrite in slope-intercept form

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m = 2 and b = 1

Plot the point corresponding to the y-intercept, (0,1)

picture23

The m-value, the slope, tells us that for each step to the right on the x-axis we move 2 steps upwards on the y-axis (since m = 2)

picture24

And once you have your second point you can just draw a line through the two points and extend it in both directions.

picture25

You can check to see that the line you've drawn is the correct one by substituting the coordinates of the second point into the original equation. If the equation holds true than the second point is correct.

Our second point = (1, 3)

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Our second point is a solution to the equation i.e. the line we drew is correct.

A line that passes through the origin has a y-intersect of zero, b = 0, and represents a direct variation.

y=mx

In a direct variation the nonzero number m is called the constant of variation.

You can name a function, f by using the function notion

f(x)=mx+b

f(x) is another name for y and is read as "the value of f at x" or "f of x". You can use other letters than f to name functions.

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The most basic function in a family of functions is called the parent function. The parent function of all linear functions is

f(x)=x

Step-by-step explanation:

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3 years ago
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