Question

Solve and show each step

Answer 1

The correct answer is C.

Explanation:

First off, identify the y-intercept. In this case, the y-intercept, or b, is 18. Now that we got the y-intercept, we have to identify if the slope is going up or down. In this particular case, the slope is going down, so the slope is negative. Slope is always delta y over delta x, rise over run in how they teach this in schools, so we have to find two points in particular. I chose (0, 18) and (2, 14) since they're the easiest to find out. We do 18 minus 14, which gives us 4. We then do 0 minus 2, giving us negative 2. 4 over negative 2 is negative 2, which is our slope. We try to match this with one of our answers, and C gives us an exact replica. C is the correct answer.

Answer 2

Answer: C

Explanation:

Let's check each one:

A-

The graph is linear, but it says non-linear

B- Lets take point 4, 10

Y=-x+18

-4+18=14

So, y
`\\eq`-x+18

C- Let's take point 4,10

Y=-2x+18

-8+18=10

y does =-2x+18

D- wrong since C is right