11% or 3/9 should be right. Hope it helps :)
Anytime x = 0 in a point the y intercept is immediately defined.
y = mx + b The y intercept is b
y = 0 + b
0 = 0 + b
b = 0
What you know so for is
y = mx + b
y = mx since b = 0
7 = m*1
m = 7
The answer is y = 7x <<<<<<Answer.

Simplify this quadratic function given in vertex form into standard form by simplifying the exponents and adding like terms.




(good luck :) and mark me brainliest if you're satisfied with my answer)