Can someone help me with these questions please?

3 is -3, 4 is 3

Step-by-step explanation:

In slope intercept form (y = mx+b)

m is the slope

b is the y-intercept

y = mx+b

y = -1(x) + 3

b = 3

3

Step-by-step explanation:

The y-intercept is the point that crosses the y-axis

mx+b would be the form and the b is your y-intercept

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.

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.