Question

Lines from Point/Slope (Diagonal Only) Nov 25,9:13:32 AM What is the equation of the line that passes through the point (-1, -3) and has a slope of 3? Submit Answer Answer: attempt 1 out of 2

Answer 1

The standard form of expressing a linear equation is,

`\begin{gathered} y=mx+b \\ m=\text{slope} \\ b=y-\text{intercept} \\ \text{Substitute for the given values, and you have;} \\ -3=3(-1)+b \\ -3=-3+b \\ -3+3=b \\ b=0 \\ \text{Having calculated the values of m and b, we now have;} \\ y=3x+0 \\ y=3x \end{gathered}`

The equation of the line is;

y = 3x