write the equation of a line thats has a slope of -3 and passes through (4,5)
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OpenStudy (anonymous):
y=-3x+5
OpenStudy (anonymous):
show work please
and i have more
OpenStudy (accessdenied):
You have the slope and a point. Do you know the setup for point-slope form of a line?
OpenStudy (anonymous):
yes
OpenStudy (accessdenied):
So we have:
\( y - y_1 = m(x - x_1) \)
The point we are given is set in place of \((x_1, y_2)\) and the slope is set in place of m.
Makes sense?
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OpenStudy (accessdenied):
The point (4, 5) is not a y-intercept.
OpenStudy (anonymous):
yes but what then?
OpenStudy (accessdenied):
\(y - y_1 = m(x - x_1) \)
\(y - 5 = -3 (x - 4) \)
Technically, the question gives no goal about what form to leave it in. This would actually be sufficient as the equation describing the line.
OpenStudy (accessdenied):
5 is the y-value of the point (4, 5)
But the point, (4, 5), is not on the y-axis. That is what we refer to by the y-intercept, is the intersection of the line and the y-axis.
OpenStudy (accessdenied):
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