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Grade 8 math · P.2 · Equations of lines

Rewrite a line from standard form to slope-intercept form

Move the x term to the other side, then divide every term by the number in front of y.

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  1. Rewrite 2x + 2y = −22 in the form y = mx + b.

    Answer: y = -x - 11

  2. Rewrite 9x + 3y = 6 in the form y = mx + b.

    Answer: y = -3x + 2

  3. Rewrite −4x + y = −8 in the form y = mx + b.

    Answer: y = 4x - 8

Tip: Move the x term to the other side, then divide every term by the number in front of y.

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