find the equation of the line satisfying the given condition
find the equation of the line satisfying the given condition .write the equation in the form y=mx+b. if points through (3,1) and ( -1,4)
Solution
Let the standard form of a linear equation is y = mx + b
the coordinates of the two points in ordered pairs are (3,1) and -1,4)
m = (y2-y1)/(x2-x1)
=(4-1)/(-1-3)
m =3/-4
substitute one of the two ordered pairs for x and y, and substitute the slope you calculated in Step 2 for m
y = mx + b into 1 = (3/-4)(3) + b, or 1 = 9/4 + b. i.e b=-5/4
so the standard form of a linear equation is y = mx + b( placing the value)
we get y=-3/4x + -5/4
y=-1(3x+5)/4
4y=3x+5
