Write the equation of the line that is perpendicular to the line given and through the given point. Do not use spaces in your equation. y=-x-3 (-1, 4)

This is different from the first one can someone me

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The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)