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3 years ago

⚠️⚠️marking brainliest⚠️⚠️ It’s a math question :((

Mathematics

2 answers:

Citrus2011 [14]3 years ago

4 0

Answer:

slope is 3 and in the blank goes 1. and y intercepts line at y=1

blsea [12.9K]3 years ago

3 0

Answer:

slope: 3 y-intercept: 9

Step-by-step explanation: 19-10 is 9, and 6-3 is 3 9/3 is 3.

28-19 equals 9. 19-10 is 9, so 9 fills out that blank beside 10.

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2 years ago

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3 years ago

The cost of internet access at a café is a function of time. The costs for 8, 25, and 40 minutes are shown. Write an equation in

PolarNik [594]

Answer:

$y=0.17x+3$
The cost of surfing the web at the café for one hour: $\$13.2$

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

$y=mx+b$

Where "m" is the slope and "b" is the y-intercept.

Take two points and substitute them into the formula for calculate the slope (The formula is $m=\frac{y_2-y_1}{x_2-x_1}$ ).

Having these points:

$(8,4.36)$ and $(40,9.80)$

You can identify that:

$y_2=4.36\\y_1=9.80\\\\x_2=40\\x_1=8$

Then, the slope is:

$m=\frac{4.36-9.80}{40-8}=0.17$

Substitute the slope and the coordinates of any point on the line into the equation $y=mx+b$ and then solve for "b":

$4.36=0.17(8)+b\\\\4.36-1.36=b\\\\b=3$

Therefore, equation in Slope-Intercept form that represents the function is:

$y=0.17x+3$

Since 1 hour hour has 60 minutes, you need to substitute $x=60$ into the equation and then evaluate, in order to find the cost of surfing the web at the café for one hour. Then:

$y=0.17(60)+3\\\\y=13.2$

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3 years ago