What is the y -intercept of a line that has a slope of 3 and passes through point open paren negative 1 comma negative 7 close paren ?

Use the line equation y = mx + b, where m is the slope and b is the y-intercept. Substituting the slope 3 and the point (−1, −7) gives −7 = 3(−1) + b, so b = −4. The y-intercept is negative 4, choice C.

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