How much will this grade affect me?

I’m a high school student in Canada. In my first term (out of 3) of grade 10 I got a 79 in Math but all my other grades were in the 90s. My average of the term was 91 as well. If this helps, I was also on the average of the class and the math course I’m talking is the hardest option possible in the province. Does anyone know how much one bad term grade in Math will affect me if I’m applying to elite business programs in Canada like Ivey?

Side note: Where I live, there is no grade 12, only Grade 10, 11 and then 2 extra years in a pre-college program so I’m not exactly sure if they look at my grade 10 marks.

Thanks

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