Question

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If a line with a slope of -2 crosses the y-axis at (0, 3), what is the equation of the line?

A.
y − 2x = 3

B.
-2y + 3x = 1

C.
y + 3x = 2

D.
y + 2x = 3

Answer 1

D

Explanation:

The equation would be y = -2x+3. If we take y+2x=3, and subtract 2x from both sides, we get y = -2x+3, which is the right equation.

Answer 2

2x+y =3

Explanation:

The line is given by slope intercept form

y = mx+b where is the slope and b is the y intercept

The slope is -2 and the y intercept is 3

y = -2x +3

Add 2x to each side

2x+y =3