to draw graph of 4x +5y=19 , find y, when x=-4
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Answered by
22
EXPLANATION.
Graph of the equation.
⇒ 4x + 5y = 19.
As we know that,
Put the value of x = 0 in the equation, we get.
⇒ 4(0) + 5y = 19.
⇒ 5y = 19.
⇒ y = 19/5.
⇒ y = 3.8.
Their Co-ordinates = (0,3.8).
Put the value of y = 0 in the equation, we get.
⇒ 4x + 5(0) = 19.
⇒ 4x = 19.
⇒ x = 19/4.
⇒ x = 4.75.
Their Co-ordinates = (4.75,0).
To find y when x = - 4.
Put the value of x = - 4 in the equation, we get.
⇒ 4(-4) + 5y = 19.
⇒ - 16 + 5y = 19.
⇒ 5y = 19 + 16.
⇒ 5y = 35.
⇒ y = 7.
Attachments:
Answered by
17
Answer:
• Refer the Attachment for graph
Step-by-step explanation:
• Finding y , when x = -4
Putting x = -4
4 (-4) + 5y = 19
-16 + 5y = 19
5y = 19 + 16
5y = 35
y = 7.
Attachments:
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