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3 years ago

PLEASE HELP!!! ASAP I don't understand this!!!

Mathematics

1 answer:

Paladinen [302]3 years ago

7 0

Answer by JKismyhusbandbae: So this is really simple. You are probably making this out harder than it needs to be. Consider the set of ordered pairs {(-1,0), (4,-5), (6,-6), (9,11), (10,14)}. This set of ordered pairs is a function because for each value of x there is one and only one y-value. This means that the x value never repeats. Therefore any function is a function when the x value never repeats.

Looking at the table we want to find all it's ordered pairs: (0,4), (1,2), (2,3), (3,9), (4,1).

F(2) is 3 so when x equals 2.

So the ordered pair is (2,3) 2 is the x value and the f(2) is 3.

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What is an equation of the line that passes through the points (4,1) and (8,-3)?

Rus_ich [418]

Answer:

y=-x+5

Step-by-step explanation:

(4,1)

(8,-3)

1)a slope of a line is (y2-y1)/(x2-x1)

so (-3-1)/(8-4)

-4/4=>m=-1

2)to find y-int replace any points in the equation by x and y

so 1=-1(4)+b

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so b= 5

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3 years ago

Find the values of x and y.

vova2212 [387]

Look at the picture.

We have the equation (1) 12x + 4y = 40.

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Therefore we have the equation (2) (12x + 4y) + (17x - y) = 90

Substitute (1) to (2):

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We have the system of equations:

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