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3 years ago

What is the slope- intercept form of 4x+5y=20

Mathematics

1 answer:

True [87]3 years ago

5 0

Answer:

y = -4/5x + 4

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Algebra I

Standard Form: Ax + By = C

Slope-Intercept Form: y = mx + b

m - slope

b - y-intercept

Step-by-step explanation:

Step 1: Define

Standard Form: 4x + 5y = 20

Step 2: Rewrite

Subtract 4x on both sides: 5y = 20 - 4x
Divide 5 on both sides: y = 4 - 4/5x
Rearrange: y = -4/5x + 4

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Answer:

The correct option is C ) 109.5°

Therefore,

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Step-by-step explanation:

Given:

In Triangle DEF

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Solution:

In Triangle DEF , Cosine Rule says

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Substituting the values we get

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