Answer:

Step-by-step explanation:
Notice that with the provided information they are given you not ust the slope of the line (-2), but also the y-intercept (the point where the line crosses the y-axis which happens when x=0).
So you can directly write the equation of the line in slope-intercept form [
where "m" is the slope and "b" the y-value when x=0].
Such gives us:

He square root of 30...........
Answer:
x² - 4x + 3
General Formulas and Concepts:
<u>Alg I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
Roots: x = 1, 3
Leading Coefficient: 1
<u>Step 2: Write linear roots</u>
(x - 1)(x - 3)
<u>Step 3: Expand by FOIL</u>
x² - 3x - x + 3
<u>Step 4: Combine like terms</u>
x² - 4x + 3