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2 years ago

What is an equation of the line with slope -4/5 and y-intercept 7?

Mathematics

1 answer:

Lemur [1.5K]2 years ago

6 0

Answer:

The equation's formula:

$y - y1 = m(x - x1) \\$

Remember that y intercept's x coordinate=0

So:

$y - 7 = - \frac{4}{5} (x - 0) \\ y - 7 = - \frac{4}{5} x \\ y = - \frac{4}{5} x + 7 \: or \: y = - 0.8x + 7$

Good luck!

Intelligent Muslim,

From Uzbekistan.

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Answer:

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Step-by-step explanation:

For this problem we can set upt the following notation

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And we know that the total revenue for Wednesday was 831.60. So then we can set up the following equation for the total revenue

$5.10 X +9.00 Y = 831.60$

We also know that for Wedneday we have two times tickets for adults compared to child so we have

$Y =2x$

And using this condition we have:

$5.10 X + 18 X = 831.60$

And solving for X we got:

$X= \frac{831.60}{23.1}=36$

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