Question

Find the value of y if the line through the two given points is to have the indicated slope. (-4,y) and (-5,1), m= 2

Y= ?

Answer 1

Y= 1/2

Explanation:

Equation of a straight line:

Gradient= y2-y1/x2 -x2=m

Given that:

y2=1

y1=Y

x1=-4

x2=-5

1-y/-4-(-5) =2

1 - y/-4+5 =2

cross multiply

2(1-y) = -4+5

2-2y =1

-2y =1-2

-2y = -1

divide both sides by the coefficient of y

Y = 1/2