The answer to the problem of 13 equals -4x plus 9 is x equals -1.
4x+13 = 21 4x = 21-13 4x = 8 x = 2
4x = -36 x = -9
5x - 4x = 13 - 3 ie x = 10
8x+5=4x+13 4x=8 x=2 Therefore, your answer is 2.
Parallel, the slope of the second equation is 4
Y- intercept of 4x+8y=16
4x + 3 = 16 Therefore, 4x = 13 x = 13/4 Therefore, x = 3.25
X= -8
x= Negative 4
(2, 7)
4x + 7 = 6x -7 14=2x so x = 7 (plus a negative # is simply - that number)
The slope is negative 2/3.