Which point lies on the line?

Which point lies on the line described by the equation below y + 8 = 4(x - 5)?

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Solve the equation for y, and then substitute a number in for x, to find the y-coordinate with that particular x-coordinate.

y + 8 = 4(x - 5)
y + 8 = 4x - 20  {used distributive property}
y = 4x - 28  {subtracted 8 from each side}

Substitute any number in for x, such as 2:

y = 4x - 28
y = 4(2) - 28  {substituted 2 for x}
y = 8 - 28  {multiplied 4 by 2}
y = -20  {subtracted}

(2,-20) is a point that lies on the line described by the equation.

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