Question

I’m thinking the answer is A :)
A. Y=2x+4
B. Y=4x+2
C. Y=2x-4
D. Y=4x-2

Answer 1

A

Explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m =
`(y_(2)-y_(1) )/(x_(2)-x_(1) )`

with (x₁, y₁ ) = (- 2, 0) and (x₂, y₂ ) = (0, 4) ← 2 points on the line

m =
`(4-0)/(0-(-2))` =
`(4)/(0+2)` =
`(4)/(2)` = 2

The line crosses the y- axis at (0, 4 ) ⇒ c = 4

y = 2x + 4 → A