Question

The graph of a line passes through the two points (-2, 1) and (2, 1). What is the equation of the line written in general form?

Answer 1

$Slope-intercept\ form:y=mx+b\\\\m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{1-1}{2-(-2)}=\frac{0}{4}=0\\\\y=b\to y=1\\\\General\ form:Ax+By+C=0\\\\y=1\\\\y-1=0\\\\Answer{y-1=0\ where\ A=0;\ B=1;\ C=-1.$