Question

Find the equation of the line below. Arrange your answer in the form y = mx + b, where b is the constant.
https://media.glynlyon.com/g_alg02_2013/3/sq154.gif
I don't understand the lesson, so I'm hoping someone else can explain this better for me.

Answer 1

So first you find the slope of the line.

Slope formula=(y2-y1)/(x2-x1)

If you substitute the points you get

(2+2)/(2+2)=1, so m is 1

Answer 2

Then you subsitute a point of x and y to find b

x=2 y=2

y=mx+b
2=1(2)+b
2=2+b
0=b

Answer 3

So the equation would just be y=x