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lesya692 [45]
3 years ago
13

Find the x- and y- intercepts of the equation 7x+ 14 y=28

Mathematics
1 answer:
7nadin3 [17]3 years ago
5 0

Chapter : Linear equations

Lesson : Math for Junior High School

7x + 14y = 28

if want to find x and y, we must substitution value 0 to the equation x and y :

# If x = 0, then :

7x + 14y = 28

= 7(0) + 14y = 28

= 0 + 14y = 28

= 14y = 28 → y = 28/14

= y = 2

# If y = 0, then :

7x + 14y = 28

= 7x + 14(0) = 28

= 7x + 0 = 28

= 7x = 28 → x = 28 / 7

= x = 4

and that result was proven x = 4 and y = 2

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The number of buttons used is 5s+8g.

In order to use all of the available zippers and buttons, we must have ...

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Cramer's rule tells you the solution to the system

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Using this rule on the equations for zippers and buttons, we have

... s = (1·576 -8·171)/(1·5 -8·2) = -792/-11 = 72

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3 years ago
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-6p=48
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