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3 years ago

How do you isolate the variable in 3x=9

Mathematics

1 answer:

Dominik [7]3 years ago

6 0

Answer:

x = 3

Step-by-step explanation:

you would divide both sides by three to get the x alone giving you

x = 9/3

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F(x) = 7 -<br> What is the inverse

slava [35]

Answer:

Add x x and 0 0 . Since g(f(x))=x g ( f ( x ) ) = x , f−1(x)=x+7 f - 1 ( x ) = x + 7 is the inverse of f(x)=x−7 f ( x ) = x - 7

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Find the equation of a line that contains the points (0,0) and (6,−7). Write the equation in slope-intercept form, using fractio

shtirl [24]

Use the slope formula below:

$\large \boxed{m = \frac{y_2 - y_1}{x_2 - x_1} }$

To form an equation of a line - we need to find a slope and the y-intercept from y = mx+b. We are given two points which we can substitute in the formula.

$\large{m = \frac{0 - ( - 7)}{0 - 6} } \\ \large{m = \frac{0 + 7}{ - 6} \longrightarrow \frac{7}{ - 6} } \\ \large \boxed{m = - \frac{7}{6} }$

We have finally got the slope. Next is to find the y-intercept. First we rewrite the equation of y = mx+b by substituting the slope.

$\large \boxed{y = mx + b}$

The equation above is the slope-intercept form. Substitute m = -7/6 in the equation.

$\large{y = - \frac{7}{6} x + b}$

Since the graph passes through (0,0) which is an origin point. In y = mx+b if the graph passes through origin point, that means the b-value is 0. Therefore:

$\large \boxed{y = - \frac{7}{6} + 0 \longrightarrow y = - \frac{7}{6} x}$

Answer

y = -7x/6

Hope this helps and let me know if you have any doubts! Good luck on your assignment!

3 0

3 years ago

Solve -2x+4y=12 for y. A) y=2x+3 b) y= 1/2x+3 c) -y=-1/2x -3 d) x-2y=-6

rjkz [21]

Answer:

B y=1/2x+3

Step-by-step explanation:

1st isolate y by its self. 2nd eliminate x form left side. 3rd add +2 to both sides.4th divide both side with 4. then you divide both sides and you should get y=1/2x+3.

8 0

2 years ago

Answer correctly for Brainliest!!

I am Lyosha [343]

+60 or -60

Step-by-step explanation:

positive or negative square root 3600

positive square root 3600 is +60

negative square root 3600 is -60

If possible, pls give brainliest. tks

5 0

2 years ago

Which statement is true? <br><br><br> Help please.

e-lub [12.9K]

Every point on a line satisfies the equation of that line.
If two lines intersect at one point, that point is a point on both lines, so it must satisfy both lines. Since two different lines can intersect at most at one point, that point is the only point that makes the two equations true.

7 0

3 years ago