Write the equation of the line:
(0,3); slope = -2

y = -2x + 3

Step-by-step explanation:

The point-slope form of the equation of a line is:

y - k = m ( x - h )

Being m the slope and (h,k) is a point through which the line passes.

We are given the point (0,3) and the slope m=-2

Substituting:

y - 3= -2 ( x - 0 )

Operating:

y - 3= -2x + 0

y - 3= -2x

Adding 3:

y = -2x + 3

maybe i can

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.