# What is the equation of the line that passes through (44.2, -22.8) and (25.2, 34.2)?

What is the equation of the line that passes through (44.2, -22.8) and (25.2, 34.2)?
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Annie Wells
$⇒y=mx+b$
$⇒y=\frac{{y}_{2}-{y}_{1}}{{x}_{2}-{x}_{1}}\cdot x+b$
$⇒y=\frac{34.2-\left(-22.8\right)}{25.2-44.2}\cdot x+b$
$⇒y=\frac{34.2+22.8}{-19}\cdot x+b$
$⇒y=\frac{57}{-19}\cdot x+b$
$⇒y=-3x+b$
$⇒y+3x=b$
Put coordinates of any of the two points.
$⇒-22.8+3\cdot \left(44.2\right)=b$
$⇒-22.8+132.6=b$
$⇒109.8=b$
So, the equation is
y+3x=109.8