Practice problem
Which of the following equations represents the slope of a line?
m=y2−y1x2−x1m=\frac{y_2-y_1}{x_2-x_1}m=x2−x1y2−y1
a2+b2=c2a^2+b^2=c^2a2+b2=c2
y=mx+by=mx+by=mx+b
y−y0=m(x−x0)y-y_0=m(x-x_0)y−y0=m(x−x0)
Type a concept, like “slope” or “photosynthesis”.