Answer the following:

Question

Find the value of a so that point (2, -5) is on the graph of f(x)=ax²-3x+2

Answer 1

Find the value of a so that point (2, -5) is on the graph of f(x)=ax²-3x+2

You would replace f(x) by -5 and x by 2:

-5 = a(2²) - 3(2) +2

-5 = a(4) - 6 + 2

-5 = 4a - 4

You can take it from there:

1. add 4 to both sides,
2. divide both sides by 4

You will then find the value of a.