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Which equation describes the line above?

A. y= -4x-5
B. y= -1/5x-4
C. y= -5x-4
D. y= -4x-1/5

Which equation describes the line above? A. y= -4x-5 B. y= -1/5x-4 C. y= -5x-4 D. y-example-1

1 Answer

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Answer:

y = -1/5x -4

Explanation:

We know the y intercept is -4 since it crosses the y axis at -4

The slope is negative since it goes down from left to right

Take two points on the line

(0,-4) and (5,-5)

We can find the slope using the slope formula

m = ( y2-y1)/(x2-x1)

= ( -5- -4)/( 5 -0)

= (-5+4)/ ( 5-0)

= -1/5

The equation for the line in slope intercept form is y = mx+b where m is the slope and b is the y intercept

y = -1/5x -4

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