Question

How many solutions will this system of equations have?
y = -3.5x - 3.5
y = -3.5x + 3.5
A. No solution
B. Infinite solutions
C. One solution
D. Two solutions

Answer 1

@BioHazard9064

Answer 2

wow I dont know this one sry

Answer 3

do you know the slope of either line?

Answer 4

its ok :) and no i dont :/

Answer 5

match your equation with
y = m x + b

m (i.e. the number in front of x) is the slope
what is the slope of your lines?

Answer 6

3.5

Answer 7

-3.5

for both equations.

in other words they have the same slope
lines with the same slope are parallel

parallel lines do not intersect (cross)

Answer 8

a "solution" is the point that lies on both lines (which would be where they cross)
if the lines do not cross, what do you think the solution is ?

Answer 9

theres no solution?

Answer 10

yes, there is no point that is on both lines at the same time
so no solution.

btw, if the equations were the *same* then the lines would lie on top of each other, and there would be lots of solutions (an infinite number)

Answer 11

thnx :D