Question

What is the equation of a line that passes through points (0, 4) and (-4, -8)?


y= 2x+ 4
y= 2x- 4
y= 3x+ 4
y= 3x- 4

Answer 1

First find slope
Take the coordinates \((x_1,y_1)\) and \((x_2,y_2)\)
Slope formula is
\[Slope=\frac{y_2-y_1}{x_2-x_1}\]
Substitute and find slope
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Then use the point slope formula
\(y-y_1=m(x-x_1)\)
Where \((x_1,y_1)\) and slope = m