Idid the first one , but i need with the rest.

1. you described it correctly, but the final answer would be y = (-2/3)x + 490

2. to graph it from slope intercept formula, you first find the point on the y axis that matches the y-intercept. in this case it would be (0,490) (x coordinate always being 0). slope is rise/run, so you would either go down 2, and right 3, or up 2 and left 3. (see image for more detail). then, draw a line between the two points.

3. f(x) = (-2/3)x + 490

4. see attached image. i used desmos.com. you can save and upload that image.

step-by-step explanation:

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)