can someone explain how to solve this??
if y=1.8 when x=-0.18, what is y when x=-0.51?
a. -0.05
b. -5.1
c. 5.1
d. 0.05

Question

can someone explain how to solve this??
if y=1.8 when x=-0.18, what is y when x=-0.51?
a. -0.05
b. -5.1
c. 5.1
d. 0.05

campbell_st · Answer

well it looks like 

y = -10x 

so if x = -0.51

y = -10*(-0.51)

can you finish the answer..?

anonymous · Answer

-5.1 i believe:) thanks!

campbell_st · Answer

not quite... a negative times a negative gives a positive

anonymous · Answer

o my bad i didn't see the - in front of the 10!...how did you get -10 btw?

campbell_st · Answer

well I looked at y = 1.8 and x = -0.18

you can get an equation

1.8 = ? * -0.18

and you'll find x = -10 if you solve it...

campbell_st · Answer

I also saw 1.8 is 10* 0.18

made the adjustment for the negative

anonymous · Answer

o i see..thanks for your help! i really appreciate it:)