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zhenek [66]
3 years ago
13

Need help with number 4 and 5

Mathematics
1 answer:
Vsevolod [243]3 years ago
7 0

Answer:

4 is D

5 is B

Step-by-step explanation:

for #4 just plug the numbers into the formula: y = mx + b

for #5 use the slope formula.

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Answer:

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Step-by-step explanation:

I am not sure if you meant the first equation to be y or -y.  I solved it as y.

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I am going to take the second equation and write it as x =

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-x = 3y +7   Add 3y to both sides

x = -3y-7  Multiplied each term in the equation by -1 so that x could be positive

I am going to substitute -3y-7 for x in the first equation up above

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1 year ago
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Answer:

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Step-by-step explanation:

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Substitute

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8 0
2 years ago
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