3) A straight line passes through points (0,7) and (2, -1).
What is its equation?

y=-x+A

Step-by-step explanation:

y=-4x+7

Step-by-step explanation:

1) find the slope first between the two points

m= y2-y1/x2-x1

m= -1-7/2-0

m=-8/2

m=-4

2) use the linear equation y=mx+c

using the slope we find earlier and the coordinate

to substitute into the equation which is,

y=mx+c

7=-4(0)+c

c=7

3) the answer

y=-4x+7

√16 and 8.070070007 are both rational

Step-by-step explanation:

√16 = 4 which is rational.

√7 = not a perfect squared root, so it's irrational.

813.1 = doesn't repeat or do anything sus so this number is rational.

-9 = this one is good. (The fact that it is negative doesn't matter)

8.070070007... = the 3 dots means it repeats forver, which makes it irational.

If this is wrong, please tell me :). Hope this helped !!