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1 year ago

Someone please help me with this question And you can get 20 points

Mathematics

1 answer:

Mariana [72]1 year ago

6 0

$\text{Consider the slope - intercept form} ~y = mx +c,\\\\ \text{where m is the slope and and c is the y-intercept.}\\\\(a) \\\\y = -\dfrac 12 x +8 \\\\\text{This is in a form of y = mx +c, so}\\\\\text{Slope, m =}-\dfrac 12 ~ \text{and}~ \text{y - intercept , c =8}\\\\(b)\\\\y = 9x -2 \\\\\text{This is in a form of y = mx +c, so}\\\\\text{Slope, m =9}~ \text{and}~ \text{y - intercept ,}~ c =-2\\\\$

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Find the slope of the line passing through the points (-5,2)<br> and<br> (-8,8).

sattari [20]

Answer:

slope = -2

Step-by-step explanation:

(-5,2) (-8,8)

equation to find slope: $\frac{y1 - y2}{x1 - x2}$

$\frac{2-8}{-5+8}$ = $\frac{-6}{3}$ = $\frac{-2}{1}$ = -2

7 0

2 years ago

Please hurry. it's geometry.

Ainat [17]

That would be option A as the angles and sides ( the AS) have already been stated.

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2 years ago

Solve the system of linear equations by substitution

ziro4ka [17]

$y - x = 0 ...equation 1$
$2x - 5y = 9 \: ...equation \: 2$
working with equation 1
$y = x \: ...equation \: 3$
next subsitue equation 3 in equation 1
$2x - 5(x) = 9$
$2x - 5x = 9$
$- 3x = 9$
divide by -3
$x = - 3$
substitute x= -3 in equation 1
$y - ( - 3) = 0$
$-(-3) = + 3$
$y = - 3$

6 0

2 years ago

for each of the following shapes, state whether or not it has reflection symmetry. if it does, draw the lines of symmetry it.

Genrish500 [490]

Answer:

Yes

Step-by-step explanation:

The lines of symmetry are the three altitudes.

6 0

1 year ago

Please explain as well 3x+5y=21 4x-2y=-244x−2y=−24

hodyreva [135]

Step-by-step explanation:

3x + 5y = 21 * (-4) •••••• -12x -20y = -84 (a)

4x - 2y = -24 * (3) •••••• 12x -6y = -72 (b)

(a) + (b)

-26y = -156

y = 6

3x + 5 * 6 = 21

3x = 21 - 30

3x = -9

x = -3

3 0

3 years ago