Question

A line passes through the points (1, 4) and (3, 4). Which is the equation of the line?
y=-4x+8

y=-2x+6

y=-1/4x+2

y=2x+2

Answer 1

Answer:

y = -4x + 8

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step 1: Find slope m

$m=\frac{-4-4}{3-1}$

$m=\frac{-8}{2}$

m = -4

y = -4x + b

Step 2: Find y-intercept b

4 = -4(1) + b

4 = -4 + b

8 = b

Step 3: Rewrite linear equation

y = -4x + 8