Intro to slope intercept form video

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Keith Brown

November 07, 2020 20:56

During the video it is stated that the equation y=2x+3 can be arranged in many different ways. The last method the instructor states "I'm not going to do it right now..." then shows this equation (y-5)=2(x-1) and moves on without explanation. This is driving me nuts! I can not figure out how to get (y-5)=2(x-1) from y=2x+3.

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AD Baker

November 07, 2020 21:28
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(y - 5) = 2(x - 1)

(y - 5) = 2x - 2 <= distribute the 2

y - 5 + 5 = 2x - 2 + 5 <= add 5 to both sides

y = 2x + 3
Keith Brown

November 07, 2020 22:26
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AD Baker, Thank you for your response. If you went the other direction it would be?

y = 2x + 3

y - 5 = 2x + 3 - 5 <= Subtract 5 from both sides

(y - 5) = 2x - 2

(y - 5) = 2 (x - 1) < Factor out the 2

Thanks again!
AD Baker

November 08, 2020 15:31
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You are welcome and you are correct about the other direction.

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Intro to slope intercept form video

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