Question

Find the equation to the line below.
y=4/5x +?

Answer 1

y =x - 1

Explanation:

Slope intercept of a line: y =mx + b

Here, m is the slope and b is the y-intercept.

Plot any two points on the line. (5,4) & (0,-1)

`\sf \boxed{Slope =(y_2-y_2)/(x_2-x_1)}`

`\sf =(-1-4)/(0-5)\\\\=(-5)/(-5)\\\\=1`

m = 1

At y-intercept x = 0. So, the -1 is the y-intercept.

m = 1 & b = -1

y = 1x + (-1)