A line passes through the points open paren 1 comma 4 close paren and open paren 3 comma negative 4 close paren Which is the equation of the line?

The slope through (1, 4) and (3, −4) is (−4 − 4) ÷ (3 − 1) = −8 ÷ 2 = −4. Using y = mx + b and the point (1, 4), we get 4 = −4(1) + b, so b = 8. The equation is y = −4x + 8, choice C.

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