Question

need help!!

How many solutions will the following system of linear equations have?
–2x + 4y = –7
y=-1/2x+5

A.
0
B.
1
C.
2
D.
infinite

Answer 1

1. you have to compare the slopes and the y intercepts. In y = mx + b form, the slope is in the m position and the y intercept is in the b position.
-2x + 4y = -7
4y = 2x - 7
y = 1/2x - 7/4
slope = 1/2 and y int = -7/4

y = -1/2x + 5
slope = -1/2 and y int = 5

if slopes and y intercepts are different,which in this problem they are, there is 1 solution.

Answer 2

thanks for the help