Fthe coordinates of a and b are (14, -1) and (2, 1), respectively, the y-intercept of is and the equation of is y = x + . if the y-coordinate of point c is 13, its x-coordinate is .

Step 1
find the equation of the line point A(14,-1) B(2,1)
y=mx+b
m=(y2-y1)/(x2-x1)> (1+1)/(2-14)> 2/-12> -1/6
m=-1/6
with the point B(2,1) and m> find the value of b
1=(-1/6)*2+b> b=1+2/6> b=4/3
y=(-1/6)x+(4/3)

we know that
the point C is a solution  (x,13)
if the coordinate y is 13
then
13=(-1/6)x+(4/3)> 13-(4/3)=(-1/6)x> x=(35/3)*(-6)
x=-70

the answer is
the coordinate x of the point C is -70
point C(-70,13)

8-2x+3x2=6 and six is your answer