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Monica [59]
3 years ago
10

Can anyone help me with this?

Mathematics
1 answer:
Semmy [17]3 years ago
6 0

Step-by-step explanation:

for a it's y=12x+60

for b it's y=1x+21

for c it would be) 40-70=-30/1-3=-2 and then divide -30/-2 is 15.

for d it would be y=20x+20

it would be ethier a or d

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Can someone help me with this question
evablogger [386]
The answer is A;  25x²-9

<span><span>(<span><span>5x</span>+3</span>)</span><span>(<span><span>5x</span>−3</span>)</span></span><span>=<span><span>(<span><span>5x</span>+3</span>)</span><span>(<span><span>5x</span>+<span>−3</span></span>)</span></span></span><span>=<span><span><span><span><span>(<span>5x</span>)</span><span>(<span>5x</span>)</span></span>+<span><span>(<span>5x</span>)</span><span>(<span>−3</span>)</span></span></span>+<span><span>(3)</span><span>(<span>5x</span>)</span></span></span>+<span><span>(3)</span><span>(<span>−3</span>)</span></span></span></span><span>=<span><span><span><span>25<span>x</span></span></span></span></span></span>²−15x+15x−9<span>=<span><span>25<span>x</span></span></span></span>²−9
6 0
3 years ago
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pickupchik [31]

Answer:

a. What is the slope of the line?

y = -3x-3

b. What is the x-intercept of the line? (Where does the line cross the x-axis?)

(-1,0)

c. What is the y-intercept of the line? (Where does the line cross the y-axis?)

(0, -3)

Step-by-step explanation:

Calculate slope:

m = \frac{y_2-y_1}{x_2-x_1}\\m = \frac{-3-0}{0-(-1)} \\m = \frac{-3}{1}\\m = -3

Calculate y-intercept:

<em>(Pick any point that lies on the line)</em>

<em />(-1,0)

b = y - (mx)\\b = 0 - (-3 * -1)\\b = 0 - (3)\\b = -3

Create function:

y = -3x-3

Get x-intercept:

<em>Set y = 0:</em>

<em />0 = -3x-3\\3 = -3x\\-1 =x

(-1,0)

Get y-intercept:

<em>Set x = 0:</em>

y = -3x-3\\y = -3 * 0 -3\\y = 0 - 3\\y = -3

(0, -3)

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Answer:

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Step-by-step explanation:

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