Question

I need someone to answer this ASAP. Thanks

Answer 1

y = 10x + 60

Explanation:

the general slope-intercept form of a line is

y = ax + b

a = slope = (y coordinate change / x coordinate change)

b = y intercept (y value for x = 0)

we see 2 points marked directly on the line :

(2, 80) and (4, 100)

x changes by +2 (from 2 to 4).

y changes by +20 (from 80 to 100).

the slope a = +20/+2 = 10.

and we see that the line intersects the y-axis at y = 60 (that is where x = 0).

so, the line equation is

y = 10x + 60

Answer 2

y = 10x + 80

Explanation:

Formula: y = mx+b

The two points we will use to find the line of fit are (2,80) and (4,100).

1. Rewrite; 80/2 & 100/4

2. Find the slope; 100-80 = 20, 4-2 = 2, 20/2 = 10. M/Slope = 10

3. Find B; 80 = 10(2) + b --> 80 = 20 + b

-20

80 = b