What is the slope-intercept form of the line passing through (-2, -1) and (-1, 7) ?
1 Answer
Dec 17, 2015
Explanation:
The slope-intercept form of a line can be represented by the equation:
y=mx+b
Start by finding the slope of the line, which can be calculated with the formula:
m=(y_2-y_1)/(x_2-x_1)
where:
Substitute your known values into the equation to find the slope:
m=(y_2-y_1)/(x_2-x_1)
m=(7-(-1))/(-1-(-2))
m=8/1
m=8
So far, our equation is
y=8x+b
-1=8(-2)+b
-1=-16+b
b=15
Substitute the calculated values to obtain the equation:
y=8x+15