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Write the equation of the line that passes through the points (1,-4) and (4, -5).
Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal
line

2 Answers

3 votes

Answer:

Explanation:

Thanks for my points back

User Aremyst
by
7.1k points
3 votes

Answer:


y+4 = -(1)/(3) (x-1)

Explanation:

1) First, find the slope of the line. Use the slope formula
m = (y_2-y_1)/(x_2-x_1) to find the slope. Substitute the x and y values of the given points into the formula and solve:


m = ((-5)-(-4))/((4)-(1)) \\m = (-5+4)/(4-1) \\m = (-1)/(3)

So, the slope is
-(1)/(3).

2) Use the point-slope formula
y-y_1 = m (x-x_1) to write the equation of the line in point-slope form. Substitute values for
m,
x_1, and
y_1 into the formula.

Since
m represents the slope, substitute
-(1)/(3) in its place. Since
x_1 and
y_1 represent the x and y values of one point on the line, choose any one of the given points (it doesn't matter which one) and substitute the x and y values of it into the formula. (I chose (1,-4), as seen below). This gives the equation of the line in point-slope form.


y-(-4) = -(1)/(3) (x-(1))\\y+4 = -(1)/(3) (x-1)

User Uriel Frankel
by
7.9k points

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