Question

Passes through (1,9), slope = 2

Answer 1

Slope-Intercept Form:y=2x+9
Point-Slope Form:(y-9)=2(x-1)

Answer 2

Use point slope formula
$y - y1 = m(x - x1)$
$y - 9 = 2(x - 1)$
$y - 9 = 2x - 2$
$y = 2x + 7$

y=2x+7