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3 years ago

What is the equation of the line perpendicular to –x + y = 7 and passing through (-1, -1)?

1 answer:

6 0

- x + y = 7
y = x + 7
slope = 1
perpendicular slope = -1

at point (-1, -1),
y = mx + c
-1 = -1 (-1) + c
-1 = 1 + c
c = -1 -1
c = - 2

equation:
y = -x -2
y + x = -2 or - x - y = 2

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Answer:

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Step-by-step explanation:

Given

$(x_1,y_1) = (0,45)$

$(x_2,y_2) = (6,33)$

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Step-by-step explanation:

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Six friends share cost of gift. They pay $90 and receive $42 in change. How much does each pay?

miskamm [114]

Lets look at the info we have:-

6 friends
Pay $90 and receive $42 in change.

Question:-

How much does each friend pay?

To answer this first we nee to find out how much they paed in total. lets do that 1st:-

90 - 42 = 48
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CHECK OUR WORK:-

48 + 42 = 90
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Now lets divide to find out how much each person paid:-

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CHECK OUR WORK:-

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