SOLUTION: The point (-1,2) lies on the line -bx +2y =-4 what is the value of b

Question 1066018: The point (-1,2) lies on the line -bx +2y =-4 what is the value of b
Found 2 solutions by josmiceli, Boreal:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
( -1, 2 ) is ontheline

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
substitute
-b(-1)+2(2)=-4
b+4=-4
b=-8
this is a line with slope-intercept form y=-4x-2, standard form 4x+y=-2, 8x+2y=-4. If -b=8, b=-8.

RELATED QUESTIONS
the equation of a straight line is 3x+ 2y =5. Given that the point (k,4) lies on the... (answered by checkley77)
Point(a,-2) lies on the line whose equation is 2x-6y=14. What is the value of... (answered by Alan3354)
A line m goes through the point (4,-3) and is perpendicular to the line 3x+2y=9. The... (answered by lwsshak3)
For what value of b do the lines bx+3y=10 and x�2y=4 intersect at a point on the... (answered by Fombitz)
A parabola with an equation of the form y = ax^2 + bx + c has the point (-2, 1) as its... (answered by Fombitz)
The point (t, 2t) lies on the line 3x + 2y + 7 = 0. Find the value of... (answered by ovie27)
If the point (a − 1, a + 1) lies on the line y = 2x − 3, what is the value of (answered by josgarithmetic)
If x=16, what is the value of y so that the point (16,y) lies on this... (answered by tommyt3rd)
A) Let g(x) = x^2+bx+11. The point lies on (-1,8) on the graph of g. Find the value of b. (answered by ikleyn)