State whether the relationship between x and y in y=4x-5 is proportional or non proportional. Then graph the function.

OlgaM077 [116]

Answer:

$\large\boxed{\left[\begin{array}{ccc}10&-30\\-10&-2\end{array}\right]}$

Step-by-step explanation:

$X-3\left[\begin{array}{ccc}2&-8\\-4&2\end{array}\right] =\left[\begin{array}{ccc}4&-6\\2&-8\end{array}\right]\\\\X-\left[\begin{array}{ccc}(3)(2)&(3)(-8)\\(3)(-4)&(3)(2)\end{array}\right]=\left[\begin{array}{ccc}4&-6\\2&-8\end{array}\right]\\\\X-\left[\begin{array}{ccc}6&-24\\-12&6\end{array}\right]=\left[\begin{array}{ccc}4&-6\\2&-8\end{array}\right]$

$X-\left[\begin{array}{ccc}6&-24\\-12&6\end{array}\right]+\left[\begin{array}{ccc}6&-24\\-12&6\end{array}\right]=\left[\begin{array}{ccc}4&-6\\2&-8\end{array}\right]+\left[\begin{array}{ccc}6&-24\\-12&6\end{array}\right]\\\\X=\left[\begin{array}{ccc}4+6&(-6)+(-24)\\2+(-12)&-8+6\end{array}\right]\\\\X=\left[\begin{array}{ccc}10&-30\\-10&-2\end{array}\right]$

7 0

3 years ago

A linear function has a slope of Negative StartFraction 7 Over 9 EndFraction and a y-intercept of 3. How does this function comp

Svet_ta [14]

Answer:

They are the same line written in different forms.

Step-by-step explanation:

Given a linear function with a slope of $-\frac{7}{9}$ and a y-intercept of 3.

The equation of the line in the slope-intercept form is given as:

$y=-\frac{7}{9}x+3$

Given the other line,

$y+11=-\frac{7}{9}(x-18)$

Simplified:

$y+11=-\frac{7}{9}x+14\\y=-\frac{7}{9}x+14-11\\y=-\frac{7}{9}x+3$

The two lines are one and the same line.

4 0

3 years ago

Read 2 more answers

Find the uncertainty in a calculated average speed from the measurements of distance and time. Average speed depends on distance

zzz [600]

Answer:

$\frac{\Delta v}{v}=0.426$

Step-by-step explanation:

you have that the average sped is given by the following formula:

$v(x,t)=\frac{x}{t}$

The uncertainty formula for a division is given by:

$\frac{\Delta v}{v}=\sqrt{(\frac{\Delta x}{x})^2+(\frac{\Delta t}{t})^2}$ (1)

Δv: uncertainty in speed

Δx: uncertainty in the distance = 0.9m

Δt: uncertainty in time = 0.7s

x: distance = 8.1m

t: time = 1.7s

You replace the values of all parameters in the equation (1):

$\frac{\Delta v}{v}=\sqrt{(\frac{0.9}{8.1})^2+(\frac{0.7}{1.7})^2}\\\\\frac{\Delta v}{v}=0.426$

Hence, the relation between the uncertainty in the average velocity is 0.426

4 0

3 years ago

A cylindrical barrel has a radius of 7.6 ft. and a height of 10.8 ft. Tripling which dimensions will triple the volume of the ba

Flauer [41]

Tripling the height will triple the volume.

Formua is r^2 * $\pi$ * height.

If you triple the radius, you must still square it, so it will be 9 times bigger.

If you triple the height, then it will be 3 times bigger.

5 0

3 years ago

Solve for x.<br><br> −1/4x+5=3/4<br><br> Enter your answer in the box.

OLEGan [10]

The answer for this one is x=17

4 0

3 years ago