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# Quick help with a maths question watch

1. y=k(a^x)

points on graph are (1,7) and (3,175)

find k and a

Cheers
2. (Original post by joepeat)
y=k(a^x)

points on graph are (1,7) and (3,175)

find k and a

Cheers
Have you tried substituting in the two points? Post your working.
3. so y=k(a^x)

7=k(a^1) or 7=ka

175=k(a^3)

stuck there
4. Simultaneous equations...

Adding, subtracting, and multiplying probably won't help...but...

Also, note that 175=7*25
5. ok got ya. cheers

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Updated: March 17, 2013
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