Select the correct answer.
2 answers:
Answer:
A
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
here m = - 3, so
y = - 3x + c ← is the partial equation of the line
To find c substitute (7, 8) into the partial equation
8 = - 21 + c ⇒ c = 8 + 21 = 29
y = - 3x + 29 → A
Answer:
A. y=-3x + 29
Step-by-step explanation:
The slope shows up in the equation as the coefficient of x. Only answer choice A has an x-coefficient of -3. It also happens to describe a line that goes through (7, 8).
y = -3x +29
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Check
y = -3·7 +29 = -21 +29 = 8 . . . . as required
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Step-by-step explanation:
