Line qr goes through points q(0, 1) and r(2, 7). which equation represents line qr?

First, find the slope of the two coordinates.

m = y2 - y1 / x2 - x1

m = 7 - 1 / 2 - 0

m = 6 / 2

m = 3

The slope of the line is 3.

Substitute the slope and either given coordinate into the equation of a line:

y - y1 = m(x - x1)

Using the coordinate (2, 7):

y - 7 = 3(x - 2)

y - 7 = 3x - 6

Add 7 to both sides of the equation.

y = 3x + 1

Solution: y = 3x + 1

Subtracting is the opposite of adding