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Slope = 4, passing through (-3, 6); point slope form

Sagot :

Take into account that a general expression for a linear equation can be written as follow:

y - yo = m(x - xo)

where m is the slope of the line, and (xo , yo) is a point of such a line.

Replace the given values of m and (xo,yo):

m = 4

(xo,yo) = (-3,6)

into the general expression for a linear equation:

y - 6 = 4(x - (-3))

and solve for y:

y - 6 = 4(x - (-3))

y - 6 = 4(x + 3) apply distribution property right side

y - 6 = 4x + 12 add 6 both sides

y = 4x + 12 + 6

y = 4x + 18

the slope-intercept form of a equation of a line is, in general:

y = mx + b

where m is the slope and b the y-intercept

then, by comparing the previous equation with the obtained result, you can notice that the slope-intercept form of the required line is:

y = 4x + 18