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26 votes
26 votes
3.

Write the equation of the line, in slope - intercept form, that goes through the given points:

( - 1, - 5 ) ( 0, 1 )

User MaatDeamon
by
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1 Answer

29 votes
29 votes

Answer:

y = 6x +1

Explanation:

To write the slope-intercept form equation for a line, you need to know the slope and the y-intercept. These can be found from their respective formulas.

__

slope

The slope of a line between points (x1, y1) and (x2, y2) is given by the formula ...

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

For points (-1, -5) and (0, 1), the slope is ...

m = (1 -(-5))/(0 -(-1)) = 6/1

m = 6

y-intercept

The y-intercept is the value of y where the line crosses the y-axis. That axis is where x = 0. There is a formula that can be used to find the y-intercept from the slope and a point on the line:

b = y -mx . . . . . y-intercept of line with slope m through point (x, y)

However, one of the given points is already the y-intercept: (0, 1). It tells you b=1.

equation

The slope-intercept equation is ...

y = mx +b

y = 6x +1

User MarkusOdenthal
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3.1k points