What is the slope-intercept from equation of the line that 0asses through (1,3) and (3,7)

Equation of a line in Slope Intercept Form:
Y = MX + B

m represents = Slope, and b
y - intercept

Find M and B

Gradient Formula: m = y2 - y1/x2 - x1
(x1, y1), (x2, y2) two points on line.
two points are: (1, 3), and (3, 7)

Calculate:
(x1, y1) = (1, 3) and (x2, y2) = (3, 7)
m = 7 - 3/3 -1 = 4/2 = 2

Partial equation: y = 2x + b
Find b, substitute given points/partial equation

Use: (1, 3) x = 1, 
                  y = 3

3 = (2)(1) + b 
3 = 2 + b, b = 1

Answer :  y = 2x + 1

Hope that helps!!!

A) for the n row: 22+(n-1)×6therefore,b) 100-22=78that means (n-1)×6=7878÷6=1313+1=1414th row has 100 seats

Hold on lemme do the work