Question

3. How many solutions does the system of equations have? x=-4y + 4 and 2x + 8y=8
A.one
B.two
C.infinitely many
D. none
4. how many solutions? y=5x+7 and 3y-15x=18
one
two
infinitely many
none

Answer 1

Express all of 'em into slope-intercept form, if only the slopes are the same, no solution. If the slopes AND the y-intercepts are the same, infinitely many solution. Otherwise, one solution.

Answer 2

5. how many solutions? x - 2y=6 and 3x-6y=18
one
two
many
none
6.how may solutions? y-6x=-3 and 4y-24x=-16

Answer 3

infinity

Answer 4

for which one