(-4,8) is dilated with the center of dilation at the origin, the image of the point is (-18, 36). what is the scale factor of this dilation

4.5

Step-by-step explanation:

You have to divide the x of the dilation image by the x of the pre-image to get our answer and to double-check, you can also do that to the y value.

to get

To make sure you are right, you can multiply the pre-image point by 4.5 and it will get you your image.

Hope this helps.

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.