Question

1. solve j/5=5/125.

a) 1/25
b) 1/5
c) 5
d) 25

2. state the x and y-intercepts of y=-4x-7.
a) x= -7, y= -7/4
b) x= -4, y= -7
c) x= -7/4, y= -7
d) x= -7, y= -4

3. solve b=6/13y + 12 for y.
a) y= 13/6 b-26
b) y= -6/13 b+15
c) y= -13/6b+26
d) y= 6/13 b-15

Answer 1

1.

`{ (j)/(5) } = { (5)/(125) } \\ j= 5 * { (5)/(125) } \\ j= { (5)/(25) } \\ j={ (1)/(5) }`

Answer is B.

2.
y = -4x - 7

x-intercept where y = 0,
0 = -4x - 7
-4x = 7
x = -7/4

y-intercept where x = 0,
y = -4(0) - 7
y = -7

Answer is C.

3.

`b= { (6)/(13y) }+ 12 \\ b - 12 = { (6)/(13y) } \\ 13y(b - 12)=6 \\ 13by-156y=6 \\ y(13b-156) = 6 \\ y= { (6)/(13b-156) }`

Answer is none of the above.

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