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3 years ago

If f(x) = -2x + 7, find f(8)

Mathematics

1 answer:

anastassius [24]3 years ago

5 0

Answer:

-9

Step-by-step explanation:

You have to plug 8 into the formula for x. f(8) = -2(8)+7 = -16+7 = -9

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The slope of the line below is -2. Use the coordinates of the labeled point to

Vilka [71]

Answer:

We can express the equation for any linear equation with slope -2 and point (x0,y0) as:

$y=-2x+(y_0+2x_0)\\\\y-y_0=-2(x-x_0)$

Step-by-step explanation:

Incomplete question:

There is no point to complete the equation.

As we have no point to complete the linear equation, we will solve for any given point (x0,y0) and a slope of m=-2.

The linear equation can be written generically as:

$y(x)=mx+b\\\\y(x)=-2x+b$

If a point, like (x0,y0) belongs to the linear equation, it satisfies its equation. Then:

$y_0=-2x_0+b$

Then, we can calculate b as:

$y_0=-2x_0+b\\\\b=y_0+2x_0$

We can express the equation for any linear equation with slope -2 and point (x0,y0) as:

$y=-2x+(y_0+2x_0)\\\\y-y_0=-2(x-x_0)$

6 0

3 years ago

Three vertices of parallelogram ABCD are A(−2, −2), B(2, 1), and C(0, 7). What are the coordinates of vertex D?

Alinara [238K]

C
you have the 2 side ones and the top one, you are missing the bottom vertice

5 0

3 years ago

Multiplied by 3/4 and then divided by 3/5 is the same as dividing by what?

netineya [11]

We have: x × $\frac{3}{4}$ ÷ $\frac{3}{5}$ = x × $\frac{3}{4}$ × $\frac{5}{3}$ = x × $\frac{5}{4}$ = x ÷ $\frac{4}{5}$

ANSWER: E. 4/5

Ok done. Thank to me :>

6 0

2 years ago

What ratio is equivalent to TanA?

USPshnik [31]

Answer:

24/10

Step-by-step explanation:

From the diagram

Opposite BC = 24cm

Adjacent = AC = 10cm

tan theta = opposite/adjacent

Substitute

tan <A = BC/AC

tan <A = 24/10

Hence the equivalent ratio is 24/10

3 0

3 years ago

Is 1.2 less than or higher than 1.5

Olenka [21]

1.2 is less than 1.5

If you cancel out 1 from both numbers you're left with .2 and .5

Multiply both by 10 and get 2 and 5.

Obviously 2 is less than 5.

4 0

3 years ago