Question

Can someone please check my answers and help/explain #4

Answer 1

(0,8)

Explanation:

To get the y-intercept put all x values equal to 0 (because we want to see where y lies on the graph when x is zero.

y=2^0+3

y=2^3

y=8

The y-intercept is (0,8)

As for the rest of the answers.....

1)A) 2
`√(12)`-5
`√(3)` = 4
`√(3)`-5
`√(3)` so the final answer is -
`√(3)`

1B) the problem is (3-
`√(7)`)(3+
`√(7)`) a quick formula to help you solve this type of problem is (a-b)(a+b)= a^2-b^2 so you transform the question to 3^2-
`√(7)` ^2

to get 9-7 which is 3 therefore the final answer is 3

2) when you transform a function from y=x^2-3 to y=x^2+1 the graph moves 4 units up. So the final answer is b)4 units up

Question 3a and 3b are correct