Question

Which equation could be solved using the graph above?

Answer 1

Answer:

Option 3

Step-by-step explanation:

we are given the graph of a parabola

with vertex at (0,-1) and symmetrical about y axis and also open up.

Hence the equation of the graph would be transformation of $y=x^2$

by a vertical shift of 1 unit down.

So new equation after transformation would be

$y+1=x^2$

Or$y=x^2-1$

Hence option 3 is right choice.

Verify:

Put Solving the equation we get

$x^2=1$

$x=±1$

In the graph x intercepts are the same as -1 and 1

Hence our answer is right.

Answer 2

Answer:

Quadratic functions unit test part 1 connexus : 1.c 2.c 3.c 4.c 5.a 6.b. 7.a. 8.c. 9.b. 10.c. 11.b. 12.b. 13.False. 14.true. 15.false. 16.false. And 17 is an essay